use static protocol for segment.io js include

... to properly work in phonegap

Author: Thomas Klaner

ng-segmentio.js

@@ -46,7 +46,7 @@ angular.module('segmentio', ['ng']).factory(
 					script.type = 'text/javascript';
 					script.id = 'analytics-js';
 					script.async = true;
-					script.src = '//cdn.segment.io/analytics.js/v1/' + key + '/analytics.min.js';
+					script.src = 'https://cdn.segment.io/analytics.js/v1/' + key + '/analytics.min.js';
 					script.onload = script.onreadystatechange = function() {
 						deferred.resolve($window.analytics);
 					};