Merge pull request #62 from jzaefferer/iss-59

Fix default for whiteSpace.after.PropertyName.
Merge pull request #65 from jzaefferer/iss-64

Always check whitespace around FunctionExpressionOpeningBrace.
add new line at EOF (function_expression) to avoid errors.
add info about EditorConfig to CONTRIBUTING.md
Add option to indent one level less when inside a function expression.