refs #4 'set config about assets, and add gem sprockets'
Merge branch 'develop'
refs #4 'add gems simplecov, rcov, and so on'
refs #4 'set the ruby version and the rails version'
refs #4 'change the ruby version, 2.1.0 -> 2.1.1'
refs #4 'change a database name'
refs #4 'comment out mysql.sock'
refs #4 'delete a duplicate gem, simplecov'
refs #4 'set spec_helper for rcov'
refs #4 'typo, equire -> require'
refs #4 'add a gem, ci_reporter'
refs #4 'add ci_reporter to Rakefile'
refs #6, refs #8 'add spec, sign in/ sign out / sign up'
refs #9 'add feature spec, update nickname'
refs #6 'fix factory, user -> original_user'
refs #10 'add feature spec, update email'
refs #5 'cordinate feature spec'
refs #7, refs #9, refs #11, refs #12 'add and modify features spec'
refs #10 'modify features spec'
refs #13 'add features spec to check a nickname'