Update README.md

Prem chand Avanigadda · web-flow · commit 6c1ca70eca7b · 2019-02-11T14:29:56.000-05:00
diff --git a/README.md b/README.md
@@ -14,3 +14,8 @@
 * Diffe-Hellman
 * Merkle-Hellman Knapsack system
 * PGM
+
+### Requirements 
+
+* Python 
+* Java (DES,RSA and Rabin)
