jgltf-browser preview release 2

A preview of the current (snapshot) version of the jgltf-browser.

The JAR file contains all dependencies and can directly be started with a double-click (or with java -jar jgltf-browser-0.0.0-SNAPSHOT-jar-with-dependencies.jar at the command line). The glTF files or URLs can be dragged-and-dropped into the window, and explored using the tree view. The menu may be used to directly access the Khronos sample models.