[Edge case] Use start "{{", end "}}" symbols from $interpolate instead of hardcoded ones

[diimpp]

Hi,

I'm using custom start, end symbols, so I just spent 15 embarrassing minutes by figuring out what's wrong. :)

 module.config(function($interpolateProvider) {
     $interpolateProvider.startSymbol('{[{').endSymbol('}]}');
 });

So it would be cool to parametrize actual symbols in templates.

P.S. Thank you for very professional and well documented package.

[jtrussell]

I think the only spot we actually hard code interpolation delimiters is in the default template. After providing your own node template you shouldn't have any issues. We can definitely get a fix in for this though - and a PR would be welcome.