[VOL-1460]

Build Go stubs using the Makefile, instead of in a separate script.

New method is independent of GOPATH (which makes testing easier), and is
'go_package' aware, so any new .proto files will have directories
created and regenerated under go/

Cleaned up README.md and Makefile

Lexically sort input to protoc as --descriptor_set_out differs depending
on the order of file arguments passed to it.

Released v0.1.2

Change-Id: If9d5aabc89b4d73f3e069b01b38bd0bf8d1b3c43
diff --git a/.gitignore b/.gitignore
index 9713c4f..5d6f023 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,9 @@
 .tox
 venv_protos
 
+# go related
+go_temp
+
 # generated files that shouldn't be committed
 *_pb2.py
 *_pb2_grpc.py