updated feature.xml and added category.xml

git-svn-id: svn://svn.code.sf.net/p/rodin-b-sharp/svn/trunk/Handbook@12877 1434b563-b632-4741-aa49-43a3a8374d2e

org.rodinp.handbook.feature/category.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<site>
+   <feature url="features/org.rodinp.handbook.feature_1.0.0.qualifier.jar" id="org.rodinp.handbook.feature" version="1.0.0.qualifier">
+      <category name="Rodin Handbook v.2.2"/>
+   </feature>
+   <category-def name="Rodin Handbook v.2.2" label="Rodin Handbook v.2.2">
+      <description>
+         Rodin Handbook v.2.2
+      </description>
+   </category-def>
+</site>

org.rodinp.handbook.feature/feature.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <feature
       id="org.rodinp.handbook.feature"
-      label="Rodin Handbook Feature"
+      label="Rodin Handbook v.2.2"
       version="1.0.0.qualifier"
       provider-name="Formal Mind GmbH">