More fully document the contribution process, move most of the details from
CONTRIBUTING.rst to sphinx.
Captitalize GH properly
Merge pull request #54 from alex/document-contributing

More fully document the contribution process
changes to parameterize_encrypt_test to support other NIST vectors

* ECB has no IV so we need to be able to pass params rather than have
  them hardcoded in the method
Merge pull request #55 from reaperhulk/parameterize-encrypt-changes

Changes to parameterize_encrypt_test to support other NIST vectors
Merge branch 'master' into triple-des

Conflicts:
	tests/primitives/test_nist.py
consistency