fix install info, remove internal testing info

Author: freeformz

README.md

@@ -22,16 +22,7 @@ git remote set-head origin -a
 ## Installation
 
 ```console
-cd $(go env GOPATH)/src/github.com/signalsciences
-git clone https://github.com/signalsciences/sigsci-module-golang.git
-```
-
-## Running tests
-
-Must be logged into our ECR repo
-
-```console
-aws ecr get-login-password --region us-west-2 --profile sigsci_prod | docker login --username AWS --password-stdin 803688608479.dkr.ecr.us-west-2.amazonaws.com
+go get github.com/signalsciences/sigsci-module-golang@latest
 ```
 
 ## Example Code Snippet