chore(publishing): add semantic-release (#415)

* chore(release): [WIP] add semantic-release

* test(ci): wip

* test(ci): add node versions

* test(ci): remove extra test

* tests(ci): revise

* tests(ci): only push to npm on master

* tests(ci): use matrix on jobs

* tests(ci): revise

* tests(ci): update

* tests(ci): test

* tests(ci): test

* tests(ci): p

* tests(ci): update travis.yml

.travis.yml

@@ -1,4 +1,11 @@
+sudo: false
+notifications:
+  email: false
 language: node_js
+node_js:
+  - "8"
+  - "7"
+  - "6"
 
 matrix:
   include:
@@ -17,23 +24,27 @@ matrix:
     - os: linux
       node_js: "6"
       env: JOB_PART=integration
-sudo: false
-
-notifications:
-  email: false
 
 before_install:
-  - npm i -g npm
-
-install:
+  - npm i -g npm@latest
   - npm ci
-  - npm install --global codecov
-  - npm install --global eslint
+  - npm install -g codecov
+  - npm install -g eslint
 
 before_script:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
 
-script:
-  - npm run travis:$JOB_PART
-  - commitlint-travis
+jobs:
+  include:
+    - stage: commit lint
+      script: commitlint-travis
+    - stage: NPM release
+      if: branch = master
+      node_js: "8"
+      script: echo "Deploying new webpack-cli version to npm ..."
+      deploy:
+        script: npx semantic-release
+        provider: npm
+        api_key: $NPM_API_KEY
+        on: deploy-npm-release