.travis.yml in async-redis-0.1.0 vs .travis.yml in async-redis-0.2.0

@@ -2,18 +2,15 @@
 cache: bundler
 
 services:
   - redis-server
 
-before_script:
-  - gem update --system
-  - gem install bundler
-
 matrix:
   include:
     - rvm: 2.3
     - rvm: 2.4
     - rvm: 2.5
+    - rvm: 2.6
     - rvm: jruby-head
       env: JRUBY_OPTS="--debug -X+O"
     - rvm: ruby-head
     - rvm: rbx-3
   allow_failures: