Add binomial proportion confidence intervals
Restructure test documentation

- move doc for tests and api methods to separate dir
- add link to implemented methods
- fix some typos
- fix contigency table in documentation
Merge pull request #10 from BigCrunsh/pinned.f3c63af3.tmp

Add binomial proportion confidence intervals
Fix #11, FisherTLinearAssociation issue

This is a permutation test so the p-value could be somewhat variable.
I sped up the procedure and increased the number of permutations by a
factor of 10.