ci: add greenkeeper-lockfile (#26)

Author: csvenke

.travis.yml

@@ -2,7 +2,7 @@ language: node_js
 
 node_js:
   - "node"
-  - "8"
+  - "10"
 
 notifications:
   email: false
@@ -11,10 +11,22 @@ branches:
   only:
     - master
     - /^greenkeeper.*$/
+  
+before_install:
+  - npm install -g greenkeeper-lockfile
+
+install:
+  - npm install
+
+before_script:
+  - greenkeeper-lockfile-update
 
 script:
   - commitlint-travis
   - npm run test:prod && npm run build
 
 after_success:
   - npm run report-coverage
+  
+after_script:
+  - greenkeeper-lockfile-upload