Merge pull request #52 from lightstep/sarah/LS-5226

LS-5226: Add proto code and instructions

Author: frenchfrywpepper

Makefile

@@ -67,3 +67,9 @@ thrift:
 		thrift -r --gen py -out /out /data/crouton.thrift
 	python-modernize -w $(PWD)/lightstep/crouton/
 	rm -rf lightstep/crouton/ReportingService-remote
+
+# LightStep-specific: rebuilds the LightStep protobuf files.
+proto:
+	protoc --proto_path "$(PWD)/../googleapis:$(PWD)/../lightstep-tracer-common/" \
+		--python_out="$(PWD)/lightstep" \
+		collector.proto

README.md

@@ -40,6 +40,22 @@ Only required for LightStep developers
 pip install modernize
 ```
 
+* [Protobuf Python Compiler](http://google.github.io/proto-lens/installing-protoc.html)
+
+Only required for LightStep developers
+```python
+brew install protobuf
+```
+
+* Generating the proto code
+```python
+cd ..
+git clone https://github.com/googleapis/googleapis.git
+git clone https://github.com/lightstep/lightstep-tracer-common.git
+cd lightstep-tracer-python
+make proto
+```
+
 ## Getting Started with Tracing
 
 Please see the [example programs](examples/) for examples of how to use this library. In particular: