docs: update installation instruction

Author: rodrigo-brito

readme.md

@@ -9,7 +9,7 @@ A fast cryptocurrency trading bot framework implemented in Go. Ninjabot permits
 
 ## Installation
 
-`go get -u github.com/rodrigo-brito/ninjabot`
+`go get -u github.com/rodrigo-brito/ninjabot/...`
 
 ## Examples of Usage