added a module that can mark the package as developmentDependency during installation.
The script comes from http://blog.danskingdom.com/have-your-nuget-package-install-itself-as-a-development-dependency/
added releaseNotes to explain how developmentDependency is handled now
changed version to 1.0.1.1
Merge branch 'hotfix/1.0.1.1'