.travis.yml in jekyll-favicon-0.2.0 vs .travis.yml in jekyll-favicon-0.2.1

@@ -4,10 +4,14 @@
   - 2.5.0
   - 2.4.3
   - 2.3.6
   - 2.2.9
   - 2.1.10
-before_install:
-  - sudo apt-get update
-  - sudo apt-get install imagemagick libmagickcore-dev libmagickwand-dev
-  - sudo apt-get install -qq graphicsmagick
-  - gem install bundler -v 1.16.1
+addons:
+  apt:
+    config:
+      retries: true
+    packages:
+      - imagemagick
+      - libmagickcore-dev
+      - libmagickwand-dev
+      - graphicsmagick