Remove unecessary dependencies

fixes #1

Author: gor181

gulpfile.js

@@ -15,11 +15,9 @@ var taskConfig = {
 	component: {
 		name: 'Chart',
 		dependencies: [
-			'classnames',
 			'react',
 			'react-dom',
-			'chart.js',
-			'uid'
+			'chart.js'
 		],
 		lib: 'lib'
 	},

package.json

@@ -13,9 +13,7 @@
     "url": "https://github.com/gor181/react-chartjs-2/issues"
   },
   "dependencies": {
-    "chart.js": "^2.1.0",
-    "classnames": "^2.1.2",
-    "uid": "0.0.2"
+    "chart.js": "^2.1.0"
   },
   "devDependencies": {
     "babel-eslint": "^4.1.3",

src/Chart.js

@@ -2,8 +2,6 @@ import React, {PropTypes} from 'react';
 import ReactDOM from 'react-dom';
 import Chart from 'chart.js';
 
-import uid from 'uid';
-
 const ChartComponent = React.createClass({
 
 	displayName: 'ChartComponent',
@@ -33,7 +31,6 @@ const ChartComponent = React.createClass({
 
 	componentWillMount() {
 		this.chart_instance = undefined;
-    this.chart_uid = uid(10);
 	},
 
 	componentDidMount() {
@@ -57,7 +54,7 @@ const ChartComponent = React.createClass({
 
 	renderChart() {
     const {data, options, legend, type} = this.props;
-    const node = ReactDOM.findDOMNode(this.refs[this.getRefKey()]);
+    const node = ReactDOM.findDOMNode(this);
 
     this.chart_instance = new Chart(node, {
       type,
@@ -66,19 +63,13 @@ const ChartComponent = React.createClass({
     });
   },
 
-  getRefKey() {
-    return `chart-${this.chart_uid}`;
-  },
-
   render() {
 		const {height, width} = this.props;
 
     return (
       <canvas
 				height={height}
 				width={width}
-				ref={this.getRefKey()}
-				key={this.chart_uid}
 			/>
     );
   }