fix #108

* implement selectRow.bgColor

* add story for selectRow.bgColor

* add testing for selectRow.bgColor

* patch docs for selectRow.bgColor

packages/react-bootstrap-table2-example/examples/row-selection/selection-bgcolor.js

@@ -0,0 +1,88 @@
+/* eslint no-unused-vars: 0 */
+import React from 'react';
+
+import BootstrapTable from 'react-bootstrap-table2';
+import Code from 'components/common/code-block';
+import { productsGenerator } from 'utils/common';
+
+const products = productsGenerator();
+
+const columns = [{
+  dataField: 'id',
+  text: 'Product ID'
+}, {
+  dataField: 'name',
+  text: 'Product Name'
+}, {
+  dataField: 'price',
+  text: 'Product Price'
+}];
+
+const selectRow1 = {
+  mode: 'checkbox',
+  bgColor: '#00BFFF'
+};
+
+const selectRow2 = {
+  mode: 'checkbox',
+  bgColor: (row, rowIndex) => (rowIndex > 1 ? '#00BFFF' : '#00FFFF')
+};
+
+const sourceCode1 = `\
+const columns = [{
+  dataField: 'id',
+  text: 'Product ID'
+}, {
+  dataField: 'name',
+  text: 'Product Name'
+}, {
+  dataField: 'price',
+  text: 'Product Price'
+}];
+
+const selectRow = {
+  mode: 'checkbox',
+  bgColor: '#00BFFF'
+};
+
+<BootstrapTable
+  keyField='id'
+  data={ products }
+  columns={ columns }
+  selectRow={ selectRow }
+/>
+`;
+
+const sourceCode2 = `\
+const columns = [{
+  dataField: 'id',
+  text: 'Product ID'
+}, {
+  dataField: 'name',
+  text: 'Product Name'
+}, {
+  dataField: 'price',
+  text: 'Product Price'
+}];
+
+const selectRow = {
+  mode: 'checkbox',
+  bgColor: (row, rowIndex) => (rowIndex > 1 ? '#00BFFF' : '#00FFFF')
+};
+
+<BootstrapTable
+  keyField='id'
+  data={ products }
+  columns={ columns }
+  selectRow={ selectRow }
+/>
+`;
+
+export default () => (
+  <div>
+    <BootstrapTable keyField="id" data={ products } columns={ columns } selectRow={ selectRow1 } />
+    <Code>{ sourceCode1 }</Code>
+    <BootstrapTable keyField="id" data={ products } columns={ columns } selectRow={ selectRow2 } />
+    <Code>{ sourceCode2 }</Code>
+  </div>
+);