update therubyracer
add newer/older parameter to list api refs #161
improve test coverage refs #161
refactor inclusion judgement expression  refs #161
Merge pull request #162 from shimomura1004/id/161

add newer_than/older_than parameter to list api refs #161
Fixed: sending messages on emoji completer with enter key refs #160
Fixed: wrong indents refs #160
Merge pull request #160 from codefirst/id/160

Sending messages on emoji completer with  enter key
Added: Ruby 2.1.0 support refs #163
Merge pull request #163 from codefirst/id/163

Support Ruby 2.1.0
Removed: warning: encountered \r in middle of line refs #164
Merge pull request #164 from codefirst/id/164

Remove: warning: encountered \r in middle of line
replace pref with message list api refs #165
replace prev/next in message page refs #165
remove unused controller methods refs #165
workaround for search page refs #165
escape query parameters refs #165
workaround for search page refs #165
remove console.log and fix bug in search page refs #165
modify test to check the number of appended messages