.gitignore update.
Unnecessary imports removal.
.gitignore update.
REST IntentService addition.

Having an IntentService responsible for executing the HTTP requests
(in the background) will provide a more stable base for future
improments.

Also, it provides a callback-like method of requesting info.
When a web request is done, it returns its result to a ResultReceiver
(if provided by the sservice caller).
First iteration of a simple DesignerNews wrapper.

Built on top of the previous RESTService developed for this app.
Its responsabilities are build the URIs and structure/format the
request content so it can be handed over to the RESTService and
easily executed.