fix($ci): insure releases are published from travis

.travis.yml

@@ -1,12 +1,9 @@
 sudo: false
 language: node_js
 node_js:
-  - node
-  - 6
-  - 4
+  - stable
 script:
   - echo success
-
 after_success:
   - yarn run semantic-release
 branches:

README.md

@@ -153,7 +153,7 @@ Most the code comes from the original Extract Text Webpack Plugin--the goal is t
 
 
 ## Contribution
-We use [commitizen](https://github.com/commitizen/cz-cli), so run `npm run commit` to make commits. A command-line form will appear, requiring you answer a few questions to automatically produce a nicely formatted commit. 
+We use [commitizen](https://github.com/commitizen/cz-cli), so run `npm run commit` to make commits. A command-line form will appear, requiring you answer a few questions to automatically produce a nicely formatted commit. Releases, semantic version numbers, tags and changelogs will automatically be generated based on these commits thanks to [semantic-release](https://github.com/semantic-release/semantic-release).
 
 [npm]: https://img.shields.io/npm/v/extract-css-chunks-webpack-plugin.svg
 [npm-url]: https://npmjs.com/package/extract-css-chunks-webpack-plugin

package.json

@@ -50,6 +50,5 @@
     "commitizen": {
       "path": "./node_modules/cz-conventional-changelog"
     }
-  },
-  "version": "0.0.0-development"
+  }
 }