Adds a seeds.rb file
* adds db/seeds.rb for users, questions, answsers, votes needs more time
* uses counter_cache for answers
* adds question counter field to question
* adds vote counter field to answers and questions
* fixes attr_accessible in vote to allow setting user_id (was user)
added vote seeds
Merge branch 'master' into add_seed_db

Conflicts:
	app/views/questions/show.html.erb
Merge pull request #23 from tiger-swallowtails-2013/add_seed_db

Adds a seeds.rb file