Remove hive loader, add pig loader, and upgrade msgpack-java version to latest 0.6.7
removed unused imports, updated README
change ioe squelch to throw runtimeexception which wraps the ioe
added test for decimal-to-integer truncation
Merge pull request #1 from mortardata/jpacker_msgpack_pig

Remove hive loader, add pig loader, and upgrade msgpack-java version to latest 0.6.7