fix: 🐛 avoide React use "key" warnings

Author: streamich

src/ListTable/__story__/story.tsx

@@ -103,3 +103,13 @@ storiesOf('UI/ListTable', module)
       <div>6</div>
     </ListTable>
   )
+  .add('Cells as text', () =>
+    <ListTable cols={2}>
+      {'1'}
+      {'2'}
+      {'3'}
+      {'4'}
+      {'5'}
+      {'6'}
+    </ListTable>
+  )

src/ListTable/index.ts

@@ -2,7 +2,7 @@ import * as React from 'react';
 
 const h = React.createElement;
 
-const defaultRenderRow = cells => h('tr', null, cells);
+const defaultRenderRow = cells => h('tr', null, ...cells);
 
 export interface Props {
   cols?: number;
@@ -26,7 +26,7 @@ export const ListTable: React.SFC<Props> = ({cols, renderRow, children}) => {
   }
 
   return h('table', null, h('tbody', null,
-    rows,
+    ...rows,
   ));
 };