Merge pull request #261 from nats-io/fix_go_get

Update the "go get" instruction to avoid error report [ci skip]

README.md

@@ -22,7 +22,7 @@ NATS Streaming provides the following high-level feature set:
 
 ```bash
 # Go client
-go get github.com/nats-io/stan.go
+go get github.com/nats-io/stan.go/
 ```
 
 ## Basic Usage