added module docstring
more doc bits
iter_ is tracked during execution
more docs
sphinx is pain:
doc additions
sphinx and doctest are insane.
merging
Merge branch 'master' of github.com:biocore/scikit-bio into workflowdoc

Conflicts:
	skbio/core/workflow.py
lets see what travis does
more travis issues
i think it works now?
removing NotExecuted abuse
MAINT: removing file closing
ENH: added forcing of phred offset
ENH: embracing numpy
MAINT: parse_fastq now uses modulus logic
DOC: PHRED -> Phred
API: force_phred_offset now takes int
DOC: more descriptive error message