SCHEMA-166. Update test according to new KijiClientTest interface.

Signed-off-by: Lee Sheng <lsheng@wibidata.com>
SCHEMA-82. Update code with DecodedCell replacing KijiCell.

Signed-off-by: Daisy Zhou <daisy@wibidata.com>
KIJIMR-11. Delete unused interface KijiClient.

Signed-off-by: Robert Chu <robert@wibidata.com>
KIJIMR-48. Add explicit Hadoop dependencies to pom.