Fade elements in after positioning on page load.
Improve power switch.
Convert world from two-dimensional canvas context to three-dimensional WebGL context.
Merge branch 'master' into gh-pages

The gh-pages branch will now serve as a demo of the latest "functioning" version of the project.  A new production branch will be created at a later date that will
incorporate performance optimizations such as minified/gzipped JavaScript, etc.