Merge pull request #8 from voltrb/ja

Update Japanese translation
Minor fixes to the tutorial

- Small spelling and grammar edits
- Fixes `incomplete` method (`_completed` should be `completed`)
- Refactors `percent_complete` method slightly
Import content from s3
Merge branch 'master' of https://push.gitbook.io/ryanstout/volt-docs
Merge pull request #9 from O-I/update-tutorial

Minor fixes to the tutorial
Sassified the scss and fixed a couple small problems in the todo sample view
Fixed a misspelling in users doc
Add url_for and url_with
Add fields docs, fix each issue
Merge pull request #10 from roblund/master

Sassified the scss and fixed a couple small problems in the todo sample ...
Update ja translation