Go back to Hound (with configuration) and use Code Climate for JSHint.

Squashed commit of the following:

commit 6eecc829f600ee132dc1c7331ec4b71ffdc0427e
Author: Joel Low <joel@joelsplace.sg>
Date:   Fri Sep 12 15:05:39 2014 +0800

    Add code climate and coveralls badges.

commit e7ca590607a82632c360a74341e98e366188f84f
Author: Joel Low <joel@joelsplace.sg>
Date:   Fri Sep 12 14:54:05 2014 +0800

    No need to have our own jshint task.

commit f560313449982b3a6e51f0fc90a9afe541b82984
Author: Joel Low <joel@joelsplace.sg>
Date:   Fri Sep 12 14:47:32 2014 +0800

    Go back to trying Hound since we *can* configure it. Also instad of having our own jshint, we will use Code Climate.

commit e40cd7fae1efe22536b36be49134da78f54b2397
Author: Joel Low <joel@joelsplace.sg>
Date:   Sat Sep 6 17:28:33 2014 +0800

    For debugging Travis.

commit 715cc497e2c375798283dd7e2c4c2137451dd5fc
Author: Joel Low <joel@joelsplace.sg>
Date:   Sat Sep 6 17:23:22 2014 +0800

    Hopefully this works.

commit 6d849eea3dc1f2b7f7a381720c91744fa2efede4
Author: Joel Low <joel@joelsplace.sg>
Date:   Sat Sep 6 17:17:27 2014 +0800

    Import JSHint.

commit 7701d8f44b048c455ecf8db0935cd60dd544e346
Author: Joel Low <joel@joelsplace.sg>
Date:   Sat Sep 6 17:11:27 2014 +0800

    Add JSHint to our CI builds.