DOC: Add minimal working example (#54)

based on #5

Author: Greg Dubicki

README.md

@@ -49,6 +49,77 @@ Usage of ./haproxy-consul-connect:
     	Consul ACL token./haproxy-consul-connect --help
 ```
 
+## Minimal working example
+
+You will need 2 SEPARATE servers within the same network, one for the server and another for the client.
+On both you need all 3 binaries - consul, dataplaneapi and haproxy-consul-connect.
+
+### The services
+
+#### Server
+
+Create this config file for consul:
+```
+{
+  "service": {
+    "name": "server",
+    "port": 8181,
+    "connect": { "sidecar_service": {} }
+  }
+}
+```
+Run consul:
+```
+consul agent -dev -config-file client.cfg
+```
+Run the test server:
+```
+python -m SimpleHTTPServer 8181
+```
+Run haproxy-connect (assuming that `haproxy` and `dataplaneapi` are $PATH):
+```
+haproxy-consul-connect -sidecar-for server
+```
+
+#### Client
+
+Create this config file for consul:
+```
+{
+  "service": {
+    "name": "client",
+    "port": 8080,
+    "connect": {
+      "sidecar_service": {
+        "proxy": {
+          "upstreams": [
+            {
+              "destination_name": "server",
+              "local_bind_port": 9191
+            }
+          ]
+        }
+      }
+    }
+  }
+}
+```
+Run consul:
+```
+consul agent -dev -config-file server.cfg
+```
+Run haproxy-connect (assuming that `haproxy` and `dataplaneapi` in $PATH) :
+```
+haproxy-consul-connect -sidecar-for client -log-level debug
+```
+
+### Testing
+
+On the server:
+```
+curl -v 127.0.0.1:9191/
+```
+
 ## Contributing
 
 For commit messages and general style please follow the haproxy project's [CONTRIBUTING guide](https://github.com/haproxy/haproxy/blob/master/CONTRIBUTING) and use that where applicable.