added new event CornerstoneNewImage that is emitted when the imageId changes for an enabled element
added CustomEvent polyfill for IE9-11
removed some code that was leftover from tools
added jshint to build
fixed all jshint issues
added "use strict" to all files
moved all source code to the /src directory
got rid of cornerstoneCore namespace
deleted old binary files from example directory
general code refactoring/cleanup
added MIT license
added banner to build output files