Removed RNASeq.t, fixed GFF.t

Functionality in RNASEq.t is tested elsewhere
overlapping in diff frames test fixed

Gene models with only one feature are now properly handled
Fixed values for intronic_mapping tests
Fixed values for intergenic reg elk only
Gene features should be included. Test passes
Fixed values in gffDiversity test. Passes
Fixed sam file length field to match gff
Added done_testing to split_reads test
Merge pull request #32 from js21/master

Support for Ensembl and new format Chado GFF files
Added AUTHORS file
Merge pull request #33 from aslett1/master

Added AUTHORS file
Transcript is now also accepted as middle feature

Several genes in mouse and human have only transcript in place of mRNAs
Merge pull request #34 from js21/master

Transcript is now also accepted as middle feature - Ensembl gene model
Merge branch 'master' of github.com:sanger-pathogens/Bio-RNASeq