Adding explanation of refactoring of code
-This is a one time copy of the ASAP library. The golden version which might be updated fron time to time can be found at:
+This is a refactored copy of the ASAP library that is compatible with the Silicon Compiler Collection and industry practices. The golden version which might be updated fron time to time can be found at:
https://github.com/The-OpenROAD-Project/asap7
