.travis.yml in signore-0.6.0 vs .travis.yml in signore-0.7.0

@@ -1,10 +1,11 @@
-cache: bundler
-fast_finish: true
+before_install:
+  - gem update --system
+  - gem install bundler
+  - bundle
 language: ruby
 matrix:
   allow_failures:
     - rvm: ruby-head
 rvm:
-  - ruby-2.3.0
+  - 2.5
   - ruby-head
-sudo: false