improving geotiff tests
 added interleaving tests plus some more fixes
better testing for WCS GML kvp
improving tests for Scaling Extension
 more tests on scaling, fixing a few issues with exceptions
more tests on subsetting and scaling
removed hack for error in tests
more tests for WCS20 trimming and slicing
#18, Add more KVP tests for RangeSubset extension
more javadoc
more tests for CRS Extension
#15, Fix Mime Type Management in DescribeCoverage
#15, Fix Mime Type Management in DescribeCoverage
fixing GML tests
Merge pull request #157 from simboss/master-wcs20

More work on WCS20