Merge pull request #6 from acmetech/master

Add pry and remove the test directory
Merge pull request #7 from acmetech/master

 Rename circle description to content. Add unique index to name & author in circles
Merge pull request #8 from acmetech/master

Rename the object_id columns
Merge pull request #9 from acmetech/master

Remove activity_id from comments
Merge remote-tracking branch 'upstream/master'