added necessary testing gems
created factories and spec_helper
formatting and color added to rspec tests
update validations to return normal error messages for testing
user model tests; all passing
login and signup helpers created
extra user tests for email addresses
added validation for yarn weight to pass tests
shoulda tests for garment, needle, pattern, yarn_weight; all tests passing
Merge pull request #9 from feministy/rspec

rspec tests for all models with shoulda