added script to download external dependency and IDE integration
added script to download external dependency and IDE integration

OpenWebGlobe/WebViewer,Hvitnov/WebViewer,Hvitnov/WebViewer,OpenWebGlobe/WebViewer,Hvitnov/WebViewer,OpenWebGlobe/WebViewer,robhawkes/WebViewer,Hvitnov/WebViewer,OpenWebGlobe/WebViewer,robhawkes/WebViewer,robhawkes/WebViewer,robhawkes/WebViewer