removing pre-commit as it has some interesting features
Merge pull request #322 from wasade/precommit

removing pre-commit as it has some interesting features
Rename skbio.maths to skbio.math

Still need to update C code.
update generated c code
Merge pull request #324 from ElBrogrammer/issue-214

Rename skbio.maths to skbio.math
Merge branch 'master' of github.com:biocore/scikit-bio into seqiters
TST: doc test failures resolved