Add slugignore
Update .slugignore
https://devcenter.heroku.com/articles/slug-compiler#slug-size
Add .slugignore heroku deps
Update libraryDependencies

* xitrum from 3.0 to 3.2
* xitrum-scalate from 1.5 to 1.6
Fix #14 Update Xitrum from 3.2 to 3.3
Remove implicit executionContext (Use xitrum's context in FutureAction)
https://github.com/ngocdaothanh/xitrum/blob/master/src/main/scala/xitrum/Action.scala#L45
Merge branch 'master' of https://github.com/georgeOsdDev/xitrum-placeholder

Conflicts:
	build.sbt
Fix #15 Update Xitrum from 3.3 to 3.4
Update Xitrum from 3.4 to 3.6
Merge branch 'master' into heroku
Update sbt version from 0.12.4 to 0.13.1
Update xitrum-package plugin from 1.4 to 1.6
Update gitignore
Update sbt from 0.12.4 to 0.13.1
Add xitrumPackage.copy
Rename bin to script
Remove bin
Merge branch 'master' of heroku.com:xitrum-placeholder into heroku