How to add Grasshopper library icon in GhPython compiled GHPYs

Here is the code. This is ready for usage.

class AssemblyInfo(GhPython.Assemblies.PythonAssemblyInfo):
    def __init__(self):
         #use your icon here
         icon_text = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAOwgAADsIBFShKgAAAABl0RVh0U29mdHdhcmUAcGFpbnQubmV0IDQuMC4yMfEgaZUAAAAMSURBVBhXY/j//z8ABf4C/qc1gYQAAAAASUVORK5CYII="
         icon = System.Drawing.Bitmap(System.IO.MemoryStream(System.Convert.FromBase64String(icon_text)))
         Grasshopper.Instances.ComponentServer.AddCategoryIcon("IWantAnIconAddon",   );
         Grasshopper.Instances.ComponentServer.AddCategorySymbolName("IWantAnIconAddon", 'I');

#... keep the rest here