fix #47

* implement table sort

* path for component test for table sort

* add store/base test

* add store/sort test

* add story for sort

* add column.sort and column.sortFunc

packages/react-bootstrap-table2-example/examples/sort/enable-sort-table.js

@@ -0,0 +1,44 @@
+import React from 'react';
+
+import { BootstrapTableful } 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',
+  sort: true
+}, {
+  dataField: 'name',
+  text: 'Product Name',
+  sort: true
+}, {
+  dataField: 'price',
+  text: 'Product Price'
+}];
+
+const sourceCode = `\
+const columns = [{
+  dataField: 'id',
+  text: 'Product ID',
+  sort: true
+}, {
+  dataField: 'name',
+  text: 'Product Name',
+  sort: true
+}, {
+  dataField: 'price',
+  text: 'Product Price'
+}];
+
+<BootstrapTableful keyField='id' data={ products } columns={ columns } />
+`;
+
+export default () => (
+  <div>
+    <BootstrapTableful keyField="id" data={ products } columns={ columns } />
+    <Code>{ sourceCode }</Code>
+  </div>
+);