README: go get -f requires Go 1.4+

README.md

@@ -43,7 +43,7 @@ http://www.consul.io/docs
 ## Developing Consul
 
 If you wish to work on Consul itself, you'll first need [Go](http://golang.org)
-installed (version 1.2+ is _required_). Make sure you have Go properly installed,
+installed (version 1.4+ is _required_). Make sure you have Go properly installed,
 including setting up your [GOPATH](http://golang.org/doc/code.html#GOPATH).
 
 Next, clone this repository into `$GOPATH/src/github.com/hashicorp/consul` and