rnachipintegrator: remove the histone modification variant (never used).
rnachipintegrator: add packager script to make tgz's for toolshed.
rnachipintegrator: switch README.markdown to toolshed-compatible README.rst.
rnachipintegrator: add full set of requirements for canonical gene variant.
rnachipintegrator: update README with info on how to get canonical gene data from UCSC.
rnachipintegrator: fix bug in tool_data_table_conf.xml with wrong number of columns in canonical gene references.
rnachipintegrator: update README (fix typos).