add gradle build
Add RequestParams#add

This is a shortcut for adding a parameter which can have many values; useful for communicating for something like Rails, where array parameters are non-unique.
DRY
doc
The failure message should have the response in a byte array.

handleSuccessMessage() was being (properly) handed a byte array, but handleFailureMessage() was being passed a string. This adjusts the call to handleFailureMessage() to pass a byte array as well.
Add .idea to gitignore
Add put(Context context, String url, HttpEntity entity, String contentType) to SyncHttpClient
Merge branch 'master' of https://github.com/Moddus/android-async-http