Add .gitignore to ignore files generated during the build

Change-Id: I0d74ff23b5e2c81e7e0c4dc990a0ce9d310e7ed5
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e288c19
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+*.swp
+
+# Generated files
+protos/schema_pb2.py
+protos/schema_pb2_grpc.py
+protos/third_party/google/api/annotations_pb2.py
+protos/third_party/google/api/annotations_pb2_grpc.py
+protos/third_party/google/api/http_pb2.py
+protos/third_party/google/api/http_pb2_grpc.py