update packages to latest version

node_modules/npm/wercker.yml

@@ -0,0 +1,22 @@
+box: wercker/nodejs
+# Build definition
+build:
+  # The steps that will be executed on build
+  steps:
+    # A step that executes `npm install` command
+    - npm-install
+    # A step that executes `npm test` command
+    - npm-test
+
+    # A custom script step, name value is used in the UI
+    # and the code value contains the command that get executed
+    - script:
+        name: echo nodejs information
+        code: |
+          echo "node version $(node -v) running"
+          echo "npm version $(npm -v) running"
+  after-steps:
+    - sherzberg/slack-notify:
+        subdomain: npm-inc
+        token: $SLACK_TOKEN
+        channel: github-commits