stub for biom col merge - making metagenome groups
updated qc plots to use retina
updated collections to use rarefaction plot
Merge branch 'master' of github.com:MG-RAST/ipy-mkmq
bug fix
added auto-scale for x,y retina plot
turned off dots in plot
bug fix
added biom column merging function (for metagenome grouping)
Merge pull request #12 from teharrison/master

bug fixes and new features