Countdown not allowing dynamic value

[papasax]

This fix Countdown not allowing dynamic value issue #97
Fix made by analuisamartins

<div ng-controller="LivreCtrl" ng-init="startat=10000">
  <timer interval="1000" countdown="startat">
</div>

[siddii]

@papasax - Please fix the build

[brk3]

Just testing dynamic values and it seems this change isn't required. The following works on the current version:

...
$scope.mycountdown = 3600;
...

<timer autostart="false" countdown="mycountdown">{{mminutes}}:{{sseconds}}</timer>