install latest rubygems version before bundle install on CI

diff --git a/.travis.yml b/.travis.yml
index 090896f91b5eb42a4cc0ee607f62bdf1b69ac993..b163d7f3d3ff5c570e792f5cd9e2c2c843ebe2d1 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 sudo: required
 dist: trusty
 language: ruby
-before_script:
+before_install:
 - gem update --system
+before_script:
 - npm install -g eslint
 rvm:
 - 2.0.0