#22 GIBS-370 Added tests for layer config tool
Fixed bug with mrfgen marking .mrf files as bad JPEG
GIBS-543 Adding correct black JPEG file.
Added tiles2mrf script
Changes to spec for building on el7
Updated changelog, release bump
Merge pull request #23 from mike-mcgann/tiles2mrf

Added tiles2mrf script
Merge pull request #24 from mike-mcgann/el7

Updates for building on EL7
GIBS-540 Added EPSG code config for correct projection metadata in MRF.
Also renamed <resampling> to <overview_resampling>
and <resize> changed to <resize_resampling>
GIBS-561 Allow full paths in empty tile config
#19 GIBS-542 Added option and support for horizontal legends
#19 GIBS-542 Added support for classifications with horizontal legends
GIBS-542 Tool now generates both vertical and horizontal color legends
GIBS-410 Cleaned up empty tiles and configuration
GIBS-410 Reorganized RPMs into separate packages for different tools
GIBS-410 Removed unnecessary requires for OnEarth subpackages
#19 GIBS-542 Moved classification table in combined horizontal legends