Add support for protobuf API definitions
diff --git a/.gitignore b/.gitignore
index 0abf43a..f49da55 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,15 @@
 
 # Virtualenv
 venv
+venv-darwin
+venv-linux
 
 # Temp data dir for testing
 tmp
+
+# Any vi swap files
+*.swp
+
+# Protobuf output files
+voltha/core/protos/*.desc
+voltha/core/protos/*_pb2.py