[maven-release-plugin] prepare for next development iteration

Author: Kyle Morse

pom.xml

@@ -10,7 +10,7 @@
     <name>Rally Rest Toolkit For Java</name>
     <groupId>com.rallydev.rest</groupId>
     <artifactId>rally-rest-api</artifactId>
-    <version>2.2.1</version>
+    <version>2.2.2-SNAPSHOT</version>
 
     <description>A java toolkit for interacting with the Rally Rest API</description>