Pushing first commit with new test packages

New test packages for generating sample SSTables. Added options for helping
with that.

Created thrift spec for student events and student event data.

Added SSTableRowMapper.
Merge branch 'master' of github.com:gneokleo/KassandraMRHelper

Conflicts:
	README.md
	src/main/java/com/knewton/mapreduce/SSTableRowMapper.java