Merge pull request #69 from jmchilton/suite_citations

Add citations for GATK2, MACS2, and bedtools.
add dependencies to build GEMINI
fixes for the new labels tool
style fixes
fixes for suspenders
Merge branch 'master' of https://github.com/bgruening/galaxytools
add scaffold for GEMINI wrappers
MACS DOI works today, not sure about this dx.doi.org API.