Update deps.

Author: jdalton

.travis.yml

@@ -8,7 +8,6 @@ node_js:
 cache:
   directories:
     - ~/.npm
-    - ~/.yarn-cache
 
 git:
   depth: 10
@@ -18,15 +17,8 @@ branches:
     - master
 
 before_install:
-  # Use exact Node version.
   - nvm use $TRAVIS_NODE_VERSION
-
-  # Setup package managers.
-  - npm set loglevel error
-  - npm set progress false
-  - npm i -g [email protected]
-  - yarn -V
+  - npm i -g npm@^5
 
 install:
-  # Install packages.
-  - yarn
+  - npm i