Restore VS2012 version of project.

Add check for completor (intellisense) window; skip arrow key processing if it's showing.
Update reference to Interop.8.0 assembly in both projects.
Alternate mechanism to detect IntelliSense via ICompletionBroker. Works with JS files now too.
Add missing reference to vs2013 project
Add DisplayWindowHelper to help skip arrow processing for completion + signature helper windows.
Merge pull request #2 from drwestco/master

Skip arrow key processing when IntelliSense is active