add `dependencies` field
fix yaml file
add test dependency of mruby-syslog
add gem file checker
add mruby-iijson
Merge pull request #66 from iij/mruby-iijson

Merged #66
Merge pull request #65 from take-cheeze/jenkins_ci

Merged #65
Add mruby-ngx-mruby-ext
Merge pull request #67 from matsumoto-r/add_mruby_ngx_mruby_ext

Merged #67
add mruby-ostruct
Merge pull request #68 from ksss/mruby-ostruct

add mruby-ostruct
Add mruby-memcached
Merge pull request #69 from matsumoto-r/add_memcached

Add mruby-memcached
Improve README

Add Travis build state and guidelines as proposed by @mattn.
add mruby-ipvs
Merge pull request #72 from rrreeeyyy/mruby-ipvs

add mruby-ipvs
added mruby-ping
Merge pull request #73 from schmurfy/mruby-ping

added mruby-ping
Added mruby-merb.gem
Removed empty line