First pass of applying review changes

1. Convert var to val
2. Rename bulkGets to bulkGet and repeat for others
3. rename this the private map method to mapPartition
4. Indenting isn't correct for all lines
5. Close all hTable (I forgot one)
6. SparkContext should be given to the HBaseContext constructer
7. remove default constructor
8. Use Seralizable writable in Spark (HadoopRDD as an Example)
9. Change the sending of Configuration to be broadcast so reduce IO to
the workers and reduce the start up time