Update grpcio to 1.4.0 (#74)

* Update grpcio from 1.3.5 to 1.4.0

* ajustes dos 3 pacotes GRPC

Author: pyup-bot

requirements.txt

@@ -5,6 +5,6 @@ nose==1.3.7
 coverage==4.4.1
 pypi-publisher==0.0.4
 requests==2.18.1
-grpcio==1.3.5
-grpcio-tools==1.3.5
-grpcio-health-checking==1.3.5
+grpcio==1.4.0
+grpcio-tools==1.4.0
+grpcio-health-checking==1.4.0