Fix a bug: output (not-composited) was wrongly in YCbCr

Fix incorrect condition of if statement at line 255 in

Fix bug on read_packet.m

Merge pull request #3 from osamu620/fix-parsing_encodeparams

Fixed incorrect parsing of input argument for encode_HTJ2K

Merge pull request #1 from osamu620/develop

Fix files for mex generation

added LICENSE.md