Add a README for instructions to launch the app

Signed-off-by: asettouf <[email protected]>

LFS171x/sawtooth-material/sawtooth-tuna/go-processor/README.md

@@ -0,0 +1,21 @@
+### Setting up the project
+
+You are going to have to download a few packages:
+
+* `go get -u github.com/golang/protobuf/proto`
+* `go get -u github.com/satori/go.uuid`
+* `go get -u github.com/pebbe/zmq4`
+
+Now since the golang sawtooth_sdk has been commited to this repo (given https://jira.hyperledger.org/browse/STL-974 ), you are ready to go.
+
+### Launch the project
+
+* First start the docker with `docker-compose -f sawtooth-default.yaml up` in the folder `sawtooth-material`
+* Now go to the folder `sawtooth-material/sawtooth-tuna/go-processor` and in your shell run: `export GOPATH=$PWD`
+* Finally run `go run src/processor/main.go`
+
+The transaction processor should start, and you should see at the end
+
+```
+2018/01/08 21:49:30.017209 processor.go:351: [INFO] Successfully registered handler (transfer-chain, 0x525b60, application/json, [19d832])
+```