SLING-7790 Allow to reference install hook via package property
 (in case the install hook is installed as bundle). Improved
 description and cleaned up formatting
diff --git a/pom.xml b/pom.xml
index 7dc69c3..f7c7411 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,107 +1,108 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor 
-	license agreements. See the NOTICE file distributed with this work for additional 
-	information regarding copyright ownership. The ASF licenses this file to 
-	you under the Apache License, Version 2.0 (the "License"); you may not use 
-	this file except in compliance with the License. You may obtain a copy of 
-	the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required 
-	by applicable law or agreed to in writing, software distributed under the 
-	License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS 
-	OF ANY KIND, either express or implied. See the License for the specific 
-	language governing permissions and limitations under the License. -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
+    license agreements. See the NOTICE file distributed with this work for additional 
+    information regarding copyright ownership. The ASF licenses this file to 
+    you under the Apache License, Version 2.0 (the "License"); you may not use 
+    this file except in compliance with the License. You may obtain a copy of 
+    the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required 
+    by applicable law or agreed to in writing, software distributed under the 
+    License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS 
+    OF ANY KIND, either express or implied. See the License for the specific 
+    language governing permissions and limitations under the License. -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
 
-	<parent>
-		<groupId>org.apache.sling</groupId>
-		<artifactId>sling</artifactId>
-		<version>30</version>
-		<relativePath />
-	</parent>
+    <parent>
+        <groupId>org.apache.sling</groupId>
+        <artifactId>sling</artifactId>
+        <version>30</version>
+        <relativePath />
+    </parent>
 
-	<artifactId>org.apache.sling.installer.provider.installhook</artifactId>
-	<version>1.0.0-SNAPSHOT</version>
-	<packaging>jar</packaging>
+    <artifactId>org.apache.sling.installer.provider.installhook</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <packaging>bundle</packaging>
 
-	<name>Sling Installer Vault Package Install Hook</name>
-	<description>
-        Can be used in packages to ensure installation of bundles/configs during package installation (circumventing )
+    <name>Sling Installer Vault Package Install Hook</name>
+    <description>
+        Can be used in packages to ensure installation of bundles/configs is triggered during package 
+        installation and is finished once the package manager returns (circumventing the asynchronicity 
+        of org.apache.sling.installer.provider.jcr)
     </description>
 
-	<properties>
-		<jackrabbit.version>2.10.0</jackrabbit.version>
-		<sling.java.version>7</sling.java.version>
-		<filevault.version>3.1.18</filevault.version>
-		<jackrabbit.version>2.10.1</jackrabbit.version>
-	</properties>
+    <properties>
+        <jackrabbit.version>2.10.0</jackrabbit.version>
+        <sling.java.version>7</sling.java.version>
+        <filevault.version>3.1.18</filevault.version>
+        <jackrabbit.version>2.10.1</jackrabbit.version>
+    </properties>
 
-	<build>
-		<plugins>
-			<plugin>
-				<artifactId>maven-jar-plugin</artifactId>
-				<configuration>
-					<archive>
-						<manifest>
-							<mainClass>org.apache.sling.installer.provider.installhook.OsgiInstallerHook</mainClass>
-						</manifest>
-					</archive>
-				</configuration>
-			</plugin>
-		</plugins>
-	</build>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+                <extensions>true</extensions>
+                <configuration>
+                    <instructions>
+                        <_include>src/main/appended-resources/META-INF/MANIFEST.MF</_include>
+                    </instructions>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
-	<dependencies>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-		</dependency>
-	
-		<dependency>
-			<groupId>org.apache.jackrabbit.vault</groupId>
-			<artifactId>org.apache.jackrabbit.vault</artifactId>
-			<version>${filevault.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>org.apache.jackrabbit</groupId>
-			<artifactId>jackrabbit-jcr-commons</artifactId>
-			<version>${jackrabbit.version}</version>
-		</dependency>
+    <dependencies>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
 
-		<dependency>
-			<groupId>javax.jcr</groupId>
-			<artifactId>jcr</artifactId>
-			<scope>provided</scope>
-		</dependency>
-		<dependency>
-			<groupId>commons-lang</groupId>
-			<artifactId>commons-lang</artifactId>
-			<version>2.5</version>
-			<scope>provided</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.apache.sling</groupId>
-			<artifactId>org.apache.sling.installer.core</artifactId>
-			<version>3.6.8</version>
-			<scope>provided</scope>
-		</dependency>
+        <dependency>
+            <groupId>org.apache.jackrabbit.vault</groupId>
+            <artifactId>org.apache.jackrabbit.vault</artifactId>
+            <version>${filevault.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.jackrabbit</groupId>
+            <artifactId>jackrabbit-jcr-commons</artifactId>
+            <version>${jackrabbit.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.jcr</groupId>
+            <artifactId>jcr</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-lang</groupId>
+            <artifactId>commons-lang</artifactId>
+            <version>2.5</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.sling</groupId>
+            <artifactId>org.apache.sling.installer.core</artifactId>
+            <version>3.6.8</version>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.apache.sling</groupId>
             <artifactId>org.apache.sling.settings</artifactId>
             <version>1.0.0</version>
             <scope>provided</scope>
-        </dependency>		
-		<dependency>
-			<groupId>org.osgi</groupId>
-			<artifactId>osgi.core</artifactId>
-			<scope>provided</scope>
-		</dependency>
+        </dependency>
+        <dependency>
+            <groupId>org.osgi</groupId>
+            <artifactId>osgi.core</artifactId>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.osgi</groupId>
             <artifactId>osgi.cmpn</artifactId>
             <scope>provided</scope>
-        </dependency>		
+        </dependency>
 
         <!-- Basic dependencies for Unit Tests -->
         <dependency>
@@ -118,6 +119,6 @@
             <version>2.13.0</version>
             <scope>test</scope>
         </dependency>
-    </dependencies>		
+    </dependencies>
 
 </project>
diff --git a/src/main/appended-resources/META-INF/MANIFEST.MF b/src/main/appended-resources/META-INF/MANIFEST.MF
new file mode 100644
index 0000000..4889165
--- /dev/null
+++ b/src/main/appended-resources/META-INF/MANIFEST.MF
@@ -0,0 +1 @@
+Main-Class: org.apache.sling.installer.provider.installhook.OsgiInstallerHook