Add a note to REALEASING_RAILS about testing the gem locally before r…

…eleasing

RELEASING_RAILS.rdoc

@@ -95,6 +95,14 @@ branch.
 
 === Update the RAILS_VERSION file to include the RC.
 
+=== Build and test the gem.
+
+Run `rake install` to generate the gems and install them locally. Then try
+generating a new app and ensure that nothing explodes.
+
+This will stop you looking silly when you push an RC to rubygems.org and then
+realise it is broken.
+
 === Release the gem.
 
 IMPORTANT: Due to YAML parse problems on the rubygems.org server, it is safest
@@ -162,6 +170,7 @@ Today, do this stuff in this order:
 * Apply security patches to the release branch
 * Update CHANGELOG with security fixes.
 * Update RAILS_VERSION to remove the rc
+* Build and test the gem
 * Release the gems
 * Email security lists
 * Email general announcement lists