fix assembly name of warning FS2003

fix #289

changed only warning message to print correct assembly name.

example:
``
warning FS2003: An System.Reflection.AssemblyInformationalVersionAttribute specified version '1.2.0.5f0cfa', but this value is invalid and has been ignored
``

Is ok to write a warning, like the c# compiler, for AssemblyInformationalVersionAttribute but is an annoying and useless warning

from [MSDN](http://msdn.microsoft.com/en-us/library/system.reflection.assemblyinformationalversionattribute(v=vs.110).aspx):

> Although you can specify any text, a warning message appears on compilation if the string is not in the format used by the assembly version number, or if it is in that format but contains wildcard characters. This warning is harmless 

@dsyme i want to add a test, like example.fs -> compile -> assert warning, there is already something like that?