Merge branch 'release/0.4.2' into develop
Merge branch 'master' into develop
change version required to build jubatus
update jenerator usage
add information on Ruby 2.0 support
Added Gentaro Watanabe
Merge pull request #42 from gwtnb/gw

Added Gentaro Watanabe
fix typo in tutorial
add new manual
fix toc missing link
translate subtitle of documentation into Japanese
translate subtitle of aboutus, howtocontribute, misc into Japanese
transrate TOC
Merge branch 'develop' of github.com:jubatus/website into develop
bump version
Merge branch 'release/0.4.3'