Merge branch 'next' into develop

* next:
  📝 Update CHANGELOG
  💎 Release new version 2.1.0
  ✨ Add travis config
  🐛 Fix tests
  ✨ Add chartId as prop and fix width and height props
  ✨ Add bubble-chart example
  ✅ Add tests
  ✨ Add chart type Bubble
  Move examples into src for better testing
  📝 Update README
  💎 Release new version 2.0.0-alpha
  Add vue 2.0 build files
  📝 Update README
  ⬆️ Update dependency chartjs to 2.2.1
  Update examples
  ⬆️ Update dependency vue 2.0
  Change deprecated v-el to ref
  Change render() method name to renderChart

# Conflicts:
#	CHANGELOG.md
#	dist/vue-chartjs.js
#	dist/vue-chartjs.js.map
#	package.json
#	src/BaseCharts/Bar.js
#	src/BaseCharts/Bubble.js
#	src/BaseCharts/Doughnut.js
#	src/BaseCharts/Line.js
#	src/BaseCharts/Pie.js
#	src/BaseCharts/PolarArea.js
#	src/BaseCharts/Radar.js
#	src/examples/App.vue
#	src/examples/BubbleExample.js
#	test/unit/specs/Bar.spec.js
#	test/unit/specs/Bubble.spec.js
#	test/unit/specs/Doughnut.spec.js
#	test/unit/specs/Line.spec.js
#	test/unit/specs/Pie.spec.js
#	test/unit/specs/PolarArea.spec.js
#	test/unit/specs/Radar.spec.js

README.md

@@ -4,9 +4,11 @@
 
 > VueJS wrapper for ChartJs
 
+# 🚧 VUE 2.0 WIP ⚠
+
 ## Install
 
-Simply run `npm install vue-chartjs`
+Simply run `npm install vue-chartjs@next`
 
 ## How to use
 
@@ -26,9 +28,9 @@ Just create your own component.
 import { Bar } from 'vue-chartjs'
 
 export default BarChart.extend({
-  ready () {
+  mounted () {
     // Overwriting base render method with actual data.
-    this.render({
+    this.renderChart({
       labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
       datasets: [
         {
@@ -58,8 +60,8 @@ import { Line } from 'vue-chartjs'
 
 export default LineChart.extend({
   props: [data, options],
-  ready () {
-    this.render(this.data, this.options)
+  mounted () {
+    this.renderChart(this.data, this.options)
   }
 })
 ```