Agregadas funciones a bfa.py

bfa.py/bfa.py

@@ -80,7 +80,9 @@ class BFA:
         'getSigners': 'clique_getSigners',
         'blockNumber': 'eth_blockNumber',
         'getSnapshot': 'clique_getSnapshot',
-        'getSnapshotAtHash': 'clique_getSnapshotAtHash'
+        'getSnapshotAtHash': 'clique_getSnapshotAtHash',
+        'getTransactionReceipt': 'eth_getTransactionReceipt',
+        'getBalance': 'eth_getBalance'
     }
     def __init__(self,
         rpc_port = default_rpc_port,