Merged migration guide from the 1.3.0 final release branck, so we hav…

…e it for all the 1.3.x releases

git-svn-id: https://svn.apache.org/repos/asf/wicket/trunk@616892 13f79535-47bb-0310-9956-ffa450edef68

README

@@ -197,7 +197,11 @@ Building using maven 2, change the working directory to src and either do:
 Migrating from 1.2
 ------------------
 
-There is a migration guide available on our Wiki:
+We have included a migration guide in the distribution called:
+
+    migrate-13.html
+
+This file is a copy of the migration guide from available on our Wiki:
 
     http://cwiki.apache.org/WICKET/migrate-13.html
 
@@ -207,7 +211,7 @@ Getting help
  - Read the online documentation available on our website
    (http://wicket.apache.org)
 
- - Read the migration guide (http://cwiki.apache.org/WICKET/migrate-13.html)
+ - Read the migration guide (migrate-13.html)
 
  - Read the mailing archives available on Nabble, GMane and Apache