Import Schrodinger's equation demo.

Schrödinger equation on 256×256 square grid.

From: http://www.ibiblio.org/e-notes/webcl/schrodinger_buf.html
Updated config file and demos.

Reviewed by: Alexandre Rocha
Add a file to identify what each demo uses (WebGL, interop, pure JS)

  Reviewed by: Antonio Gomes
Fix gl.js include in Barkley's demo
wip

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>