added tweet routes
created routes
added new and create tests, routes and views
added show, #show, and tests for show
feature test for tweeting
removed not needed files and added validation to model
Save Tweet feature test added
Merge pull request #7 from otters-2014/tweets

Tweets
Merge branch 'master' into users

routes had tweets resources added from tweet branch.
spec_helper just had extra blanks space, removed.

Conflicts:
	TwitterStories/config/routes.rb
	TwitterStories/spec/spec_helper.rb