Merge pull request #157 from fredj/ms-touch

Direct all pointer events to js code (IE pointer events)
see: http://msdn.microsoft.com/en-us/library/ie/hh673557(v=vs.85).aspx

src/ol/browserfeature.js

@@ -15,5 +15,6 @@ ol.BrowserFeature = {
    * @type {boolean} True if browser supports touch events
    */
   HAS_TOUCH: ol.ASSUME_TOUCH ||
-      (document && 'ontouchstart' in document.documentElement)
+      (document && 'ontouchstart' in document.documentElement) ||
+      !!(window.navigator.msPointerEnabled)
 };

src/ol/map.js

@@ -189,6 +189,7 @@ ol.Map = function(mapOptions) {
   this.viewport_.style.overflow = 'hidden';
   this.viewport_.style.width = '100%';
   this.viewport_.style.height = '100%';
+  this.viewport_.style.msTouchAction = 'none';
   goog.dom.appendChild(this.target_, this.viewport_);
 
   /**