Update Usage.md

Author: TonioMacaronio

Documentation/Usage.md

@@ -1 +1,36 @@
+## Usage
 
+### Create Account
+
+
+### Import Account
+
+
+### Manage Keystore
+
+
+### Ethereum Address
+
+
+### Get Balance
+
+
+### Prepare Transaction
+
+
+### Send Transaction 
+
+
+### Get gas price
+
+
+### Serialize & deserialize transactions
+
+
+### Get result
+
+
+### Get Block number
+
+
+### Get gas price