meta: fix CI

.travis.yml

@@ -2,6 +2,4 @@ language: go
 go:
   - "1.10"
 install: go get -t ./...
-script:
-  - go test
-  - go build ./example/...
+script: go test ./...

example/example_test.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"testing"
+)
+
+// test that the example package compiles
+func TestCompiles(t *testing.T) {
+}