Merge tag '1.3.2' into develop

1.3.2
Credit @bitglue (Phil Frost) for originally creating pyflakes (and therefore frosted.
Fix license to match original creators
Encourage users to flattr the original creator of pyflakes
Update LICENSE
Update setup.py

Fix setup.py
Update README.md
Update README.md
Update README.md

Explain yardstick for adding new errors to Frosted
Bump pies requirement to 2.6.0
Merge branch 'develop' of https://github.com/timothycrosley/frosted into develop
Bump version to 1.3.3
Merge branch 'release/1.3.3'