Support renaming multiple documents

Holy shit, it works now.
fix: FSharpVSPowerTools.Logic and FSharpXmlDoc projects don't build without VS 2012 installed
add Microsoft.VisualStudio.ComponentModelHost 11.0
Merge pull request #56 from vasily-kirichenko/master

fix: FSharpVSPowerTools.Logic and FSharpXmlDoc projects don't build without VS 2012 installed
Reuse Refactor menu and set focus to active document after refactoring

Internal rename menu item is still hidden.
Add docs and an option to disable rename reafactoring
Merge remote-tracking branch 'upstream/master'