Add mysql native dependency
Add documentation links to the readme
allow each user to specify their rspec config
added guard for tdd, configured to use the gaurd-rspec gem and spring (ensure the spring binstubs are installed). 

to run use: bundle exec gaurd --no-interactions, see docs for more info
fix incorrectly named spec and update model names to make it pass
Merge branch 'tdd_setup'
Update rspec to newest release
Merge pull request #20 from zooniverse/feature-updated_rspec

Update rspec to newest release
Add User Seen Subject Model
add pry rails gem for debugging with pry console
add classifications has_many associations to reciprocate the various belongs_to ones
Change subject_zooniverse_ids to subject_ids
Merge branch 'inverse_classification_relations'
Merge branch 'feature-user_seen'
use AR counter cache for to cache the count of classifications
ensure the latest user_group : user classifcation counts
Validate user login presence
Case insensitivity for User login and email
add user_group to classification association with a cached_counter
Conditional password length validation for migrated users