fix AllenFang#485

Author: AllenFang

src/BootstrapTable.js

@@ -646,7 +646,8 @@ class BootstrapTable extends Component {
       if (column.props.hidden === false) {
         keys.push({
           field: column.props.dataField,
-          format: column.props.csvFormat
+          format: column.props.csvFormat,
+          header: column.props.csvHeader || column.props.dataField
         });
       }
     });

src/TableHeaderColumn.js

@@ -121,6 +121,7 @@ TableHeaderColumn.propTypes = {
   onSort: PropTypes.func,
   dataFormat: PropTypes.func,
   csvFormat: PropTypes.func,
+  csvHeader: PropTypes.string,
   isKey: PropTypes.bool,
   editable: PropTypes.any,
   hidden: PropTypes.bool,
@@ -157,6 +158,7 @@ TableHeaderColumn.defaultProps = {
   dataSort: false,
   dataFormat: undefined,
   csvFormat: undefined,
+  csvHeader: undefined,
   isKey: false,
   editable: true,
   onSort: undefined,

src/csv_export_util.js

@@ -13,7 +13,7 @@ function toString(data, keys) {
   let dataString = '';
   if (data.length === 0) return dataString;
 
-  dataString += keys.map(x => x.field).join(',') + '\n';
+  dataString += keys.map(x => x.header).join(',') + '\n';
 
   data.map(function(row) {
     keys.map(function(col, i) {