Update README.md

Author: petrs

README.md

@@ -34,8 +34,8 @@ private short multiplication_x_KA(Bignat scalar, byte[] outBuffer, short outBuff
 ````
 
 
-### Satisfied users
-* JCMathLib library for Bignat and ECPoint operations
+### Satisfied users so far
+* [JCMathLib](https://github.com/OpenCryptoProject/JCMathLib) library for Bignat and ECPoint operations
 * You? Give it a try - love to hear the feedback :)
 
 ### Future work