Wagn 0.9+Upgrade Notes

1. You will need to install json gem! 
   /* sudo gem install json */
2. for testing, you need flexmock gem
3. memory_cache is giving us some grief, so add this to config/wagn.rb
   ActionController::Base.fragment_cache_store = :file_store
   (mem_cache also works, if you've got it installed)
4. fulltext search is now supported in postgres (see below)
   

Installing postgres fulltext search

1. install tsearch2
   /* cd $PSQL_SRC_DIR/contrib/tsearch2/ */
   /* make */
   /* sudo make install */
   

   /* sudo -u postgres make installcheck */
   

2. configure wagn.rb
   /* System.enable_postgres_fulltext = true */
   /* System.postgres_src_dir = "$PSQL_SRC_DIR" */
3. /* rake wagn:prepare_fulltext */
   this step makes a number of assumptions- that you have sudo permissions,
   there is a user postgres with priveleges to add c-functions to the db. etc.
   if these cause trouble, edit lib/tasks/prepare_fulltext.rake