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

src/examples/App.vue

@@ -20,15 +20,7 @@
   import BubbleExample from './BubbleExample'
 
   export default {
-    components: {
-      BarExample,
-      LineExample,
-      DoughnutExample,
-      PieExample,
-      RadarExample,
-      PolarAreaExample,
-      BubbleExample
-    }
+    components: { BarExample, LineExample, DoughnutExample, PieExample, RadarExample, PolarAreaExample, BubbleExample }
   }
 </script>
 

src/examples/BarExample.js

@@ -1,8 +1,8 @@
 import BarChart from '../BaseCharts/Bar'
 
 export default BarChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
       datasets: [
         {

src/examples/BubbleExample.js

@@ -1,8 +1,8 @@
 import BubbleChart from '../BaseCharts/Bubble'
 
 export default BubbleChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       datasets: [
         {
           label: 'Data One',

src/examples/DoughnutExample.js

@@ -1,8 +1,8 @@
 import DoughnutChart from '../BaseCharts/Doughnut'
 
 export default DoughnutChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['VueJs', 'EmberJs', 'ReactJs', 'AngularJs'],
       datasets: [
         {

src/examples/LineExample.js

@@ -1,8 +1,8 @@
 import LineChart from '../BaseCharts/Line'
 
 export default LineChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
       datasets: [
         {

src/examples/PieExample.js

@@ -1,8 +1,8 @@
 import PieChart from '../BaseCharts/Pie'
 
 export default PieChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['VueJs', 'EmberJs', 'ReactJs', 'AngularJs'],
       datasets: [
         {

src/examples/PolarAreaExample.js

@@ -1,8 +1,8 @@
 import PolarAreaChart from '../BaseCharts/PolarArea'
 
 export default PolarAreaChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['Eating', 'Drinking', 'Sleeping', 'Designing', 'Coding', 'Cycling', 'Running'],
       datasets: [
         {

src/examples/RadarExample.js

@@ -1,8 +1,8 @@
 import RadarChart from '../BaseCharts/Radar'
 
 export default RadarChart.extend({
-  ready () {
-    this.render({
+  mounted () {
+    this.renderChart({
       labels: ['Eating', 'Drinking', 'Sleeping', 'Designing', 'Coding', 'Cycling', 'Running'],
       datasets: [
         {