drops users table
adds tags table and join table questions_tags
removes extra tests and adds require reference to rails helper in association_spec test
adds shoulda-matchers to gemfile
adds migration for users and tags
adds successful test for association between questions and comments
Adds has_and_belongs_to_many association between tags and questions
adds Tag model
adds shoulda-matchers to gemfile
Merge branch 'master' of https://github.com/opleban/Snack_Overflow into Ori

Conflicts:
	app/models/question.rb
removes excess lambda scope top
removes all references to devise
Merge pull request #4 from opleban/Ori

Ori