link overview image from correct resource
multi-features: only Parent and Name have to match

closes #153
Merge pull request #157 from gordon/master

multi-features: only Parent and Name have to match
Merge pull request #158 from satta/github-readme

link overview image from correct resource
expand gt encseq info:
print number of sequences per file,
print filesize human readable
touches genometools/genometools#150
Merge pull request #159 from joergi-w/hiwi

expand gt encseq info: