Update README.md

Author: jgautheron

README.md

@@ -10,7 +10,7 @@ While this could be considered a beginner mistake, across time, multiple package
 
 ### Get Started
 
-    $ go get github.com/jgautheron/goconst/cmd/...
+    $ go get github.com/jgautheron/goconst/cmd/goconst
     $ goconst ./...
 
 ### Usage