Add caveat to README about MapQuest

Author: chadly

README.md

@@ -5,13 +5,15 @@ Includes a model and interface for communicating with five popular Geocoding pro
   * [Google Maps](https://developers.google.com/maps/) - [docs](https://developers.google.com/maps/documentation/geocoding/)
   * [Yahoo! BOSS Geo Services](http://developer.yahoo.com/boss/geo/) - [docs](http://developer.yahoo.com/geo/placefinder/guide/index.html)
   * [Bing Maps (aka Virtual Earth)](http://www.microsoft.com/maps/) - [docs](http://msdn.microsoft.com/en-us/library/ff701715.aspx)
-  * MapQuest [(Comercial API)](http://www.mapquestapi.com/) - [docs](http://www.mapquestapi.com/geocoding/)
-  * MapQuest [(OpenStreetMap)](http://open.mapquestapi.com/) - [docs](http://open.mapquestapi.com/geocoding/)
+  * :warning: MapQuest [(Comercial API)](http://www.mapquestapi.com/) - [docs](http://www.mapquestapi.com/geocoding/)
+  * :warning: MapQuest [(OpenStreetMap)](http://open.mapquestapi.com/) - [docs](http://open.mapquestapi.com/geocoding/)
 
 The API returns latitude/longitude coordinates and normalized address information.  This can be used to perform address validation, real time mapping of user-entered addresses, distance calculations, and much more.
 
 See latest [release notes](https://github.com/chadly/Geocoding.net/releases/latest).
 
+:warning: There are some open issues ([#29](https://github.com/chadly/Geocoding.net/issues/29), [#45](https://github.com/chadly/Geocoding.net/issues/45), [#48](https://github.com/chadly/Geocoding.net/issues/48)),  with MapQuest which have some workarounds. If you would like to hep fix the issues, PRs are welcome.
+
 ##Installation
 
 Install [via nuget](http://www.nuget.org/packages/Geocoding.net/):