Add cache bundler in travis

Caching the bundle between builds drastically reduces the time a build takes to run.
ruby-grape · Nov 2, 2018 · 378df0d · 378df0d
1 parent cd2f475
commit 378df0d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: ruby
+cache: bundler
 
 sudo: false