🎉 Adding updates to doc and release 'process'

Author: matzew

README.adoc

@@ -23,7 +23,7 @@ In a Maven managed project simply the following to your `pom.xml`:
   <dependency>
     <groupId>org.aerogear.kafka</groupId>
     <artifactId>kafka-cdi-extension</artifactId>
-    <version>0.0.10</version>
+    <version>0.0.12</version>
   </dependency>
 ...
 ----

RELEASE.adoc

@@ -0,0 +1,12 @@
+= Releasing Kafka-CDI to maven central
+
+With the correct setup user account on `oss.sonatype` servers, and a correctly configured `gpg`, we use the Maven release plugin to run the release.
+
+It's a two step process of `mvn release:prepare`, followed by `mvn release:perform`, while both need some extra arguments, like:
+
+[source,bash]
+----
+mvn release:prepare -Dgpg.useagent=true -Darguments=-Dgpg.passphrase=XYZ_SUPER -Pjboss-release,gpg-sign
+mvn release:perform -Dgpg.useagent=true -Darguments=-Dgpg.passphrase=XYZ_SUPER -Pjboss-release,gpg-sign
+----
+