Added HtmlAgilityPack files.  Removed Gtk project in favor of the much simpler console application.
Update project file.
Merge branch 'master' of https://github.com/harsimranb/mozjsrefscraper

Conflicts:
	JSRefScraper/JSRefScraper.csproj
	JSRefScraper/MainWindow.cs
	JSRefScraper/gtk-gui/MainWindow.cs