Release instructions added.
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+<!--
+ 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.
+-->
+
+<img src="https://nlpcraft.apache.org/images/nlpcraft_logo_black.gif" height="80px" alt="">
+
+## 1. Configure Release Environment
+
+### Apache release
+- Configure file `prepare.sh` by setting your local GPG fingerprint `localUser={YOUR_VALUE}`
+
+### Maven release
+- Prepare maven passwords encryption (master and apache passwords) - https://maven.apache.org/guides/mini/guide-encryption.html
+- Encode **gpg.passphrase** for desired user - https://central.sonatype.org/pages/working-with-pgp-signatures.html
+
+As result, you should have the following files in the folder `{USER_HOME}/.m2`:
+- `settings-security.xml` file should contain the following content:
+ ```xml
+ <settingsSecurity>
+ <master>{YOUR_MASTER_PASSWORD}</master>
+ </settingsSecurity>
+ ```
+- `settings.xml` file should contain the following content:
+ ```xml
+ <server>
+ <id>apache.snapshots.https</id>
+ <username>YOUR_APACHE_USERNAME</username>
+ <password>{YOUR_APACHE_PASSWORD}</password>
+ </server>
+
+ <server>
+ <id>apache.releases.https</id>
+ <username>YOUR_APACHE_USERNAME</username>
+ <password>{YOUR_APACHE_PASSWORD}</password>
+ </server>
+
+ <profiles>
+ <profile>
+ <id>gpg</id>
+ <activation>
+ <activeByDefault>true</activeByDefault>
+ </activation>
+ <properties>
+ <gpg.executable>gpg2</gpg.executable>
+ <gpg.passphrase>YOUR_GPG2_PASSPHRASE</gpg.passphrase>
+ <gpg.keyname>YOUR_GPG2_KEY_ID</gpg.keyname>
+ </properties>
+ </profile>
+ </profiles>
+ ```
+ Note that encrypted passwords are in brackets.
+## 2. Make Apache Release
+Note that `pom.xml` scm tag should contain actual tag name.
+For example, if version is `0.5.0` and tag name is `v0.5.0` following pom `scm` section should be:
+```xml
+<scm>
+ <url>https://github.com/apache/incubator-nlpcraft.git</url>
+ <connection>scm:git:ssh://git@github.com/apache/incubator-nlpcraft.git</connection>
+ <developerConnection>scm:git:ssh://git@github.com/apache/incubator-nlpcraft.git</developerConnection>
+ <!-- Set actual tag name here -->
+ <tag>v0.5.0</tag>
+</scm>
+```
+
+## 3. Make Maven Release
+ - `cd <PROJECT_FOLDER>`
+ - `mvn -DskipTests=true clean deploy -P release`
+ - Login into https://repository.apache.org
+ - Look at staging repositories https://repository.apache.org/#stagingRepositories
+ - Find and close `nlpcraft` release, then check its state.
+
+
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