Update readme to link to Docker image (#74)

* Update readme to link to Docker image

* Remove comment from Helm chart about user setting their own image

README.md

@@ -32,7 +32,7 @@ Users can install sloop by using helm chart now, for instructions refer [helm re
 
 ### Precompiled Binaries
 
-_DockerHub images coming soon._
+- Docker: [`sloopimage/sloop`](https://hub.docker.com/r/sloopimage/sloop)
 
 ### Build from Source
 

helm/sloop/values.yaml

@@ -2,9 +2,7 @@ serviceAccountName: sloop
 name: sloop
 replicas: 1
 image:
-  # for now, user needs to set their own imag tag,for example:test-20191009
   tag: latest
-  # for now, user needs to set their own image
   repository: sloopimage/sloop
 persistentVolume:
 ## If defined it will specify the storageClass for the statefulSet