.travis.yml in ezclient-0.12.0 vs .travis.yml in ezclient-0.13.0

@@ -6,9 +6,13 @@
   - 2.3
   - 2.4
   - 2.5
   - ruby-head
 
+gemfile:
+  - gemfiles/http3.gemfile
+  - gemfiles/http4.gemfile
+
 before_install: gem install bundler
 
 env: SUITE="rspec"
 
 script: bundle exec $SUITE