Updated index.html to force refresh

*added missing demo, webgl_shaders_ocean2

By adding a marquee at the desired velocity one can force the refresh update on older versions of the android stock browser on many type of ARM handsets.
*momentary fix*
To check functionality take your android device and go to Settings - Developer options - Show screen updates(make areas of screen flashing when they update) ; if working,the screen should constantly blink at our desired rate.
Without it, the screen is under the control of the power saving system of the dalvik machine,probably (unless it's a browser bug)...
Still,this makes three.js working on devices with this kind of problem.