EMBLmyGFF3-1.2.4

Added test-directory with test script and expected outputs
Added .travis.yml file for automatic testing
Updated test.sh to trigger travis
Synchronisation help and readme text
Documentation updates
Fix #28 translation error in minus strand
XXX locus_tag was not set automatically, while it was displayed it would.
Fix #27 accession becomes a boolean. The value will be filled by the sequence name if activated.
Fix #22 - duplicated db_xref are removed now