Adds Node.js 8 to list of officially supported versions.

jakubpawlowicz · jakubpawlowicz · commit 35740d5f692e · 2018-03-02T16:04:42.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,6 @@ cache: npm
 node_js:
   - 4
   - 6
-  - 7
+  - 8
 matrix:
   fast_finish: true
