Merge pull request #26 from krtx/master

Modified the validation of register.
Merge pull request #27 from krtx/master

Fixed a bug of initial_submit.
Delete redundant code.
Merge pull request #28 from krtx/master

Add logger.
Merge pull request #29 from OKU1987/oku/build

Delete redundant code.
Add meta tags.
Fixed scheme.yml loading failure.
Merge pull request #32 from sowa-snow/scheme_fix

Fixed scheme.yml loading failure.
Merge pull request #31 from chiro/charset

Add meta tags.
Added missing encoding specs.
Merge pull request #33 from sowa-snow/encoding

Added missing encoding specs.
Add .travis.yml.