updating InitConfig per AWS docs

updating InitConfig to conform to docs for API Version 2010-05-15: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-init.html
removing whitespace to fix travis.ci build
Merge branch 'master' of https://github.com/patrickmcclory/troposphere into patrickmcclory-master
Merge branch 'patrickmcclory-master'