Move checkstyle-configuration into sub-folder
diff --git a/pom.xml b/checkstyle-configuration/pom.xml
similarity index 100%
rename from pom.xml
rename to checkstyle-configuration/pom.xml
diff --git a/src/main/resources/directory-checks.xml b/checkstyle-configuration/src/main/resources/directory-checks.xml
similarity index 100%
rename from src/main/resources/directory-checks.xml
rename to checkstyle-configuration/src/main/resources/directory-checks.xml
diff --git a/src/site/site.xml b/checkstyle-configuration/src/site/site.xml
similarity index 100%
rename from src/site/site.xml
rename to checkstyle-configuration/src/site/site.xml