Add shared Visual Studio and ReSharper settings

The VS settings can be imported through Tools/Import and Export
Settings, the R# ones through ReSharper/Manage Options, Import/Export
Settings, Import from File.
Add shared MonoDevelop setting file and settings to solution

The settings can be imported by running Edit/Custom Policies,
Add Policy/From File.
Merge pull request #61 from ermshiperete/Settings

Add shared settings for Visual Studio, ReSharper and MonoDevelop