Added the default vendor directories back.

These were removed in the intial commit due to an over aggressive line
in the .gitignore file trying to exclude the gem dependencies.
Started getting login working.
Finished signup/login.
Removed dependency on libv8.
Added pg gem for production
Added Gemfile.lock
Added thin webserver.
Added user specific thought support.
Upgraded to rails 3.2.10
Added beta tag.