Changed license to MIT
Changed license to MIT

The main reason is consistency. The new license is valid for all versions equal or greater to v0.9.2.
AngleSharp/AngleSharp,AngleSharp/AngleSharp,Livven/AngleSharp,Livven/AngleSharp,FlorianRappl/AngleSharp,zedr0n/AngleSharp.Local,AngleSharp/AngleSharp,AngleSharp/AngleSharp,AngleSharp/AngleSharp,FlorianRappl/AngleSharp,FlorianRappl/AngleSharp,zedr0n/AngleSharp.Local,Livven/AngleSharp,FlorianRappl/AngleSharp,zedr0n/AngleSharp.Local