update README

docs/src/main/asciidoc/README.adoc

@@ -10,7 +10,15 @@ include::intro.adoc[]
 
 == Running the sample
 
-1. TODO: list steps to run sample
+1. Download and build zipkin
+2. Install redis and run `redis-server`
+3. `cd zipkin`
+4. `bin/collector redis` from [here](https://github.com/twitter/zipkin/blob/master/doc/redis.md)
+5. `bin/query redis`
+6. `bin/web`
+7. run sample application
+8. hit `http://localhost:3380`
+9. goto `http://localhost:8080` for zipkin web
 
 == Building