tdiary: use rbenv
tdiary: use minimum2scp/ruby-full:latest image
tdiary: use Ruby 2.2.0
updated deps.dot
Merge branch 'master' into feature/tdiary-use-rbenv
Merge pull request #10 from minimum2scp/feature/tdiary-use-rbenv

tdiary: use ruby 2.2.0
Merge branch 'master' into feature/run-apt-at-a-time