Add material-flux example

[azu]

@voronianski HI! Thanks for creating nice project.

I've added an example implementation using material-flux. (it is similar to Flummox.)

Please let me know if you need me to change anything! Thanks!

[azu]

@voronianski Thanks for review!

I'v fixed the style issue and rebased the commit.

• remove 'use strict'
• use single quotes
• add missed semicolon

[voronianski]

@azu merged

[azu]

@voronianski Thanks!