Invalid Mapping error when using min.js version with paper-menu element.

[jd009]

My code was as follows:

<paper-menu ng-model="mediaType" class="dropdown-content">  
     <paper-item>Video</paper-item>   
     <paper-item>Image</paper-item>   
</paper-menu>  

Using ng-polymer-elements.min.js, I would receive the following error:
Invalid mapping for "ngModel" - function name must be "property" or "event"

Using the ng-polymer-elements.js file (the full version), I do not see the error.

I dug into it and when Uglify passes over ng-polymer-elements.js, it converts this:

var multiSelectableMappings = {  
    ngModel: function property(element) {  
    return element.hasAttribute('multi') ? 'selectedValues' : 'selected';  
  }  
};  

into

multiSelectableMappings={ngModel:function(element){return element.hasAttribute("multi")?"selectedValues":"selected"}}  

This unfortunately deletes the function name "property" which makes the following code throw the exception:

case 'function':  
  switch(mapped.name) {  
  case 'property':  
    mappingType = '=';  
    break;  
  case 'event':  
    mappingType = '&';  
    break;  
  default:  
    throw 'Invalid mapping for "' + attr  
      + '" - function name must be "property" or "event"';  
  }  

The mapped.name does not find the name 'property' in the function because Uglify removed it.

[jd009]

I made a Pull Request to fix this issue.