Updated to latest SDK and proxy support

The project, I'm working on at work, must support proxy.
So I forked the project to add support for proxy first.

Afterwords, I noticed the project depends on an old version of the SDK that may not properly support proxy on ClientConfiguration.
Therefore, I updated to the latest SDK (1.9.0, released on October 8th 2014).
Which implies to update the pom.xml for the shade plugin.