Initial AsyncHBase support (rebased)
SCHEMA-789. Implement KijiTableWriter Interface w/ AsyncHBase
Updated necessary fiels as requested in pullrequest.
Added a wrapAndRethrow in the AsyncKijiTable constructor. Changed 'scanner' to 'Scanner' in a comment in AsyncKijiTableWriter.
SCHEMA-790. Implement BufferedKijiTableWriter Interface w/ AsyncHBase

Implement a BufferedKijiTableWriter interface using AsyncHBase instead of HTable.
Gupdates 6/16 6:50pm
Gupdates 6/17 10:57 am
Gupdates 6/30 3:40 pm
Gupdates 6/30 4:53 pm
Merge branch 'SCHEMA-793' into asynchbase