Run yarn build before CI.

Adam0000 · Adam0000 · commit bccb0bd7050c · 2018-02-09T12:46:01.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -13,6 +13,7 @@ cache:
     - "node_modules"
 
 before_script:
+- yarn build
 - yarn testrpc &
 - sleep 1
 
