keep yarn before install script

oliverlaz · oliverlaz · commit 2bc8fbe03238 · 2019-09-15T20:14:20.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,6 +3,9 @@ language: node_js
 node_js:
   node
 
+before_install:
+  - curl -o- -L https://yarnpkg.com/install.sh | bash
+
 script:
   - yarn coverage
 
