MAINT: updates moving toward skbio 0.2.1
MAINT: updates moving toward skbio 0.2.1
MAINT: updated link
MAINT: updated scikit-bio version
MAINT: added myself to the credits
BUG: generalized to handle input as StringIO or file
REVERT: reverted removal of whitespace in expected string, thanks atom
REL: updated change log
MAINT: updated to use preferred file reading method
Merge pull request #315 from gregcaporaso/issue-314

partial update to use skbio 0.2.1