Update README to indicate upcoming modules

Added a note about upcoming modules to the README.

Author: Hbasu5

README.md

@@ -39,6 +39,8 @@ The goal is to build a rock-solid foundation for:
 
 **Core Logic** - Square Checker, Computes square of a number, Determines parity & Demonstrates separation of computation and user interaction
 
+**Other Modules Will Be Added...Stay Tuned!! **
+
 =========================
 
 **📈 Development Approach**