Modified startContent (used for create-changelog) to use predefined insertMarker and versionMarker rather than hard-coded
Modified startContent (used for create-changelog) to use predefined insertMarker and versionMarker rather than hard-coded

guymguym/aws-sdk-js,GlideMe/aws-sdk-js,guymguym/aws-sdk-js,aws/aws-sdk-js,guymguym/aws-sdk-js,chrisradek/aws-sdk-js,LiuJoyceC/aws-sdk-js,LiuJoyceC/aws-sdk-js,guymguym/aws-sdk-js,jeskew/aws-sdk-js,jeskew/aws-sdk-js,chrisradek/aws-sdk-js,jeskew/aws-sdk-js,aws/aws-sdk-js,chrisradek/aws-sdk-js,chrisradek/aws-sdk-js,GlideMe/aws-sdk-js,GlideMe/aws-sdk-js,LiuJoyceC/aws-sdk-js,GlideMe/aws-sdk-js,aws/aws-sdk-js,aws/aws-sdk-js,jeskew/aws-sdk-js