SCHEMA-179. Javadoc for formatted row keys.

Signed-off-by: Aaron Kimball <aaron@wibidata.com>
SCHEMA-103. Hide ColumnNameTranslator.

Signed-off-by: Aaron Kimball <aaron@wibidata.com>
SCHEMA-219. Adds AtomicKijiPutter and KijiUtilityWriterFactory.

 - adds interface KijiWriterFactory for custom writers.
 - AtomicKijiPutter, supporting atomic puts within a single locality group
   and checkAndCommit().

Signed-off-by: Christophe Taton <taton@wibidata.com>
SCHEMA-103. Fix updated import statements.
SCHEMA-234. Implements ScanTool with basic tests.
SCHEMA-234. javadoc edits.
SCHEMA-234. code style fixes.
SCHEMA-234. Error prints.