Loads a license file, from a properly formatted Xml license string.
This method can be useful, if you want to store you license in a central location, for example, a Sql Server.
Or of you are bundling aspNetMX with your end product, you can embed the license contents (as a string or even an embedded resource) in your application. This prevents malicious use by protecting your license contents, and preventing someone else from stealing your purchased licenseret.