Fix urls
Merge pull request #1 from hoshinotsuyoshi/fix_urls

Fix urls
Format nested
Faster euler040
Add `travis_wait` for travis\n\nhttp://docs.travis-ci.com/user/build-timeouts/#Build-times-out-because-no-output-was-received
Merge pull request #2 from hoshinotsuyoshi/format-document

Format nested
Ruby 2.2
$ bundle update
Update a spec
Use expect instead of should
Merge pull request #3 from hoshinotsuyoshi/ruby-gem-update

Ruby gem update
WIP 060
WIP
WIP
WIP
WIP
WIP
WIP
solved 060