--- a/.travis.yml	Sat Apr 07 22:52:02 2018 +0200
+++ b/.travis.yml	Sat Apr 07 22:55:09 2018 +0200
@@ -1,6 +1,5 @@
 language: go
 go:
-- "1.7"
 - "1.8"
 - "1.9"
 - "1.10"

--- a/README.md	Sat Apr 07 22:52:02 2018 +0200
+++ b/README.md	Sat Apr 07 22:55:09 2018 +0200
@@ -20,7 +20,7 @@
 generate puzzles.
 I haven't written the tool documentation yet.
 
-To build the gotak CLI utility, you can use
+To build the gotak CLI utility, you can use the following command (with Go 1.8+):
 
 ```
 go get github.com/takuzu/gotak