Enable composer cache

goetas · mattfarina · commit f3a4f6ef7a2d · 2016-04-07T08:45:17.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -14,6 +14,10 @@ php:
   - 7.0
   - hhvm
 
+cache:
+  directories:
+    - $HOME/.composer/cache
+
 notifications:
   irc: "irc.freenode.net#masterminds"
 
