add setup instructions

Author: Ash

doc/setup.md

@@ -0,0 +1,30 @@
+# Local Setup
+Install etcd
+```
+brew install etcd
+```
+
+Start etcd
+```sh
+$ etcd
+```
+
+Clone and `cd` into the repo and run 
+```
+go mod tidy
+```
+
+Run the doorman server 
+```
+cd go/cmd/doorman
+go build
+./doorman -logtostderr -config=./config.yml -port=15000 -debug_port=15050 -etcd_endpoints=http://localhost:2379 -master_election_lock=/doorman.master -master_delay=200ms -hostname=localhost
+```
+
+Build and run the cli-client 
+
+```
+cd go/cmd/doorman_shell
+go build
+./doorman_shell --server=localhost:15000
+```