build(dependencies): update dependencies and travis configuration

Author: jaebradley

.travis.yml

@@ -6,6 +6,7 @@ notifications:
   email: true
 node_js:
   - '8'
+install: npm install
 before_install:
   - npm install -g npm@5
   - npm install -g greenkeeper-lockfile@1
@@ -18,6 +19,8 @@ jobs:
         - npm run test
       before_script: greenkeeper-lockfile-update
       after_script: greenkeeper-lockfile-upload
+      after_sucess: npm run codecov
     - stage: deploy
       if: branch = master
       script: npm run travis-deploy-once "npm run semantic-release"
+