GEOMESA-132 Create a branch that is compatible with Accumulo 1.5 and Hadoop 2.0 (instead of 2.2)

In addition to down-grading the version of Hadoop, this commit
also uses gt-epsg-wkt in lieu of gt-epsg-hsql, and relies on
Scala 2.10.3.

NB:  To test, this build was installed on a VM that used
Hadoop 2.0.x and Accumulo 1.5.x.  The quick-start tutorial
worked as expected, including visualization through
GeoServer.