Added start to Caesar Cipher coding challenge

Willow_Cypher_Coding_Challenge.py

@@ -0,0 +1,13 @@
+import sys
+
+if __name__ == "__main__":
+    main()
+
+def main():
+    if "-E" in sys.argv:
+        encrypt()
+    if "-D" in sys.argv:
+        //Decrypt
+    if "-h" in sys.argv:
+        #Help
+