Add yes

README.md

@@ -10,3 +10,4 @@ Implemeted utilities:
 
  * `true`
  * `false`
+ * `yes`

yes/yes.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func yes(word string) {
+	for {
+		fmt.Println(word)
+	}
+}
+
+func main() {
+	if len(os.Args) == 1 {
+		yes("y")
+	} else {
+		yes(os.Args[1])
+	}
+}