[chore] added packages link to README.md

README.md

@@ -1,3 +1,12 @@
 # Harmony-SDK-Core
 
-Hello github!
+A Harmony's blockchain javascript library
+
+It's a mono-repo library, not yet published to npm.
+
+# Packages
+
+1. [harmony-account](https://github.com/FireStack-Lab/Harmony-sdk-core/tree/master/packages/harmony-account)
+2. [harmony-crypto](https://github.com/FireStack-Lab/Harmony-sdk-core/tree/master/packages/harmony-crypto)
+3. [harmony-network](https://github.com/FireStack-Lab/Harmony-sdk-core/tree/master/packages/harmony-network)
+4. [harmony-utils](https://github.com/FireStack-Lab/Harmony-sdk-core/tree/master/packages/harmony-utils)