Merge tag '3.2.0' into develop

3.2.0
Initial work toward supporting setup.cfg
Remove extra new line
Small fixes
Prefer setup.cfg to personal isort settings
Document isort's setup.cfg support
Small test fix
Improve behaviour when neither settings path or file_path are defined
Merge pull request #104 from timothycrosley/feature/fix-issue-103

Feature/fix issue 103
Add support for skippind entire directories
Bump version to 3.3.0
Merge branch 'release/3.3.0'