Add model specs
added tag models, migrations
Merge pull request #20 from innovateworld/tags_model_migration_setup

added tag models, migrations
added attr_accessible to tag, question_tag models
Fix merge conflict question.rb
Merge pull request #19 from innovateworld/model_specs

Add model specs
Merge pull request #21 from innovateworld/tags_model_migration_setup

added attr_accessible to tag, question_tag models
cleaned up routes, added 2 tag routes
implemented tag controller, methods
Merge pull request #22 from innovateworld/tags_routes

cleaned up routes, added 2 tag routes
Merge branch 'master' into tags_controller
Merge pull request #23 from innovateworld/tags_controller

added TagsController and relevant actions
updated navbar, added views
modified tags#index to only show tags
added tags to question#index, #show
Merge pull request #24 from innovateworld/tags_views

updated navbar, added views
Merge pull request #25 from innovateworld/add_tags_to_question_views

Add tags to question views
implemented add_tag feature to new_question
moved tag implementation from controller to model
Merge pull request #27 from innovateworld/add_tags_to_new_question

moved code from model to controller