Feature/v3 (#225)

* Remove Vue dependency and change extends

Signed-off-by: Jakub Juszczak <netghost03@gmail.com>

* 💎 Release new version 3.0.0-rc0

* ⬆️ Update examples

* 📝 Update README.md

* ⬆️ Update examples

* ⬆️ Update englishd docs

* ⬆️ Update transalted docs with current code examples

* 🔥 Remove dist files from gitignore

* ⬆️ Update dependencies vue and chartjs

* Change private data

Implements #182. The private chart instance is now in the vue.js data model. And can be accessed over `this.$data._chart`
Updated unit tests

* 📝 Update docs with private data

* ✨ Add codeclimate ignore

* ⬆️ Update codeclimate

* ⬆️ Update codeclimate

* ⬆️ Update codeclimate

Add build and config folders to ignore

src/examples/DoughnutExample.js

@@ -1,6 +1,7 @@
-import DoughnutChart from '../BaseCharts/Doughnut'
+import Doughnut from '../BaseCharts/Doughnut'
 
-export default DoughnutChart.extend({
+export default {
+  extends: Doughnut,
   mounted () {
     this.renderChart({
       labels: ['VueJs', 'EmberJs', 'ReactJs', 'AngularJs'],
@@ -17,4 +18,4 @@ export default DoughnutChart.extend({
       ]
     }, {responsive: true, maintainAspectRatio: false})
   }
-})
+}