travis: Use rake < 12.0.0

Rake 12.0.0 got released on Dec 6 but our rspec version still uses removed code.
jcaamano · Dec 7, 2016 · bf64e90 · bf64e90
1 parent 876aa0f
commit bf64e90
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/Gemfile b/Gemfile
@@ -18,6 +18,7 @@
 source "https://rubygems.org"
 
 group :development do
+  gem "rake", "< 12.0.0"
   gem "uglifier", "~> 2.7.2"
   gem "sass", "~> 3.2.19"
   gem "sprockets-standalone", "~> 1.2.1"