Merge pull request #527 from ankurdave/graphx-assembly-pom

Add GraphX to assembly/pom.xml

Author: Ankur Dave <ankurdave@gmail.com>

== Merge branch commits ==

commit bb0b33ef9eb1b3d4a4fc283d9abb2ece4abcac23
Author: Ankur Dave <ankurdave@gmail.com>
Date:   Fri Jan 31 15:24:52 2014 -0800

    Add GraphX to assembly/pom.xml