Merge branch 'release/1.1.0' into develop
[CS] UTF-8 everywhere
[BUGFIX] Use async termination due to celluloid-io bug

https://github.com/celluloid/celluloid-io/issues/60
[CS] Allow JRuby failure on CI due to JRuby bug affecting Celluloid
Revert "[CS] Allow JRuby failure on CI due to JRuby bug affecting Celluloid"

This reverts commit 653f43fb60fadfa8fafcba221f8a15e14f01a857.
[CS] Travis' ruby-head is broken
[CS] Fix example which was using callbacks
Test on recent Ruby releases
Update supported rubies
Ruby 1.9 bundles JSON support
[UPDATE] Bump to 1.1.1
Merge branch 'release/1.1.1'