loading with systemjs

[mancio791]

Hi,
i found a problem loading this module with systemjs into an angular module.
Any browser console i use tell me that 'this' objecgt is undefined and so calling numeral property of undefined falls down into an error.
I suppose that there is a wrong 'this' use at line 23 of angular-numeraljs.js, so changing with more direct 'window.angular' reference all works perfectly.
Please verify this and feedback any other suggestions,
bye.