Merge branch 'master' of https://github.com/qiime/American-Gut

Puts master up to date with the current upstream master branch
Gets scripts from formatting-updates branch
Imports make_pie_plot as a new function
Merge branch 'master' of https://github.com/qiime/American-Gut into OralandSkinPlotFixes

Conflicts:
americangut/generate_otu_signifigance_tables.py
scripts/generate_otu_signifigance_tables_AGP.py
tests/test_generate_otu_signifigance.py
tests/test_make_phyla_plots_AGP.py

Resolves conflicts
Merge branch 'master' of https://github.com/qiime/American-Gut into OralandSkinPlotFixes

Conflicts:
	americangut/generate_otu_signifigance_tables.py
	scripts/generate_otu_signifigance_tables_AGP.py
	tests/test_generate_otu_signifigance.py
	tests/test_make_phyla_plots_AGP.py
Fixed a spacing problem
Brings back american gut reference
Removes print samp -- included for error checking
Merge pull request #70 from JWDebelius/OralandSkinPlotFixes

Oral and skin plot fixes