Mark as 2.2-SNAPSHOT like Maven POM.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1297745 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

build.xml

@@ -55,7 +55,7 @@
   <property name="component.title"         value="Commons IO"/>
 
   <!-- The current version number of this component -->
-  <property name="component.version"       value="2.1.1-SNAPSHOT"/>
+  <property name="component.version"       value="2.2-SNAPSHOT"/>
 
   <!-- The base directory for component sources -->
   <property name="source.home"             value="src/main/java"/>