Integrate tools to assess gc/3/5 bias, insert size, and capture efficiency

e.g. using http://deeptools.readthedocs.io/en/latest/content/tools/computeGCBias.html?highlight=bias (see "Multi-perspective quality control of Illumina RNA sequencing data analysis" http://bfg.oxfordjournals.org/content/early/2016/09/28/bfgp.elw035.abstract )

@lakshman opinion?