AG-420 Improve React implementation

src/richComponentExample/ClickableRenderer.jsx

@@ -0,0 +1,26 @@
+import React, {Component} from "react";
+
+export default class ClickableRenderer extends Component {
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            cell: {
+                row: this.props.value,
+                col: this.props.colDef.headerName
+            }
+        };
+
+        this.clicked = this.clicked.bind(this);
+    }
+
+    clicked() {
+        console.log("Child Cell Clicked: " + JSON.stringify(this.state.cell));
+    }
+
+    render() {
+          return (
+            <button style={{height: 21}} onClick={this.clicked} >Click Me</button>
+        );
+    }
+}