Adding option --percent_variation_below_one
Fixing failed test
addressing comments
fixing conflicts
Merge pull request #293 from antgonza/issue_285

Adding option --percent_variation_below_one
Fix #277
Merge branch 'master' of git://github.com/biocore/emperor into issue_277

Conflicts:
	ChangeLog.md
fixing change log
Merge pull request #295 from antgonza/issue_277

Fix #277