CHOP-15. Improved exception message when Kiji dependency jars can't be found.

Signed-off-by: Kiyan Ahmadizadeh <kiyan@wibidata.com>
CHOP-4. Add license header to all files in project.

This commit adds a license header to scalastyle_config.xml. The
rest of the files got a license header as part of CHOP-3.
CHOP-29. Added support for local mode.

Signed-off-by: Kiyan Ahmadizadeh <kiyan@wibidata.com>