refactor(background): allow multiple types #10

examples/advanced/scripts/ExampleGraph.js

@@ -147,8 +147,8 @@ class App extends PureComponent {
         }}
         connectionLineStyle={{ stroke: '#ddd', strokeWidth: 2 }}
         connectionLineType="bezier"
-        gridColor="#aaa"
-        gridGap={16}
+        backgroundColor="#aaa"
+        backgroundGap={16}
       >
         <MiniMap
           style={{ position: 'absolute', right: 10, bottom: 10 }}

examples/basic/scripts/ExampleGraph.js

@@ -64,7 +64,6 @@ class App extends PureComponent {
         onConnect={this.onConnect}
         onNodeDragStop={onNodeDragStop}
         style={{ width: '100%', height: '100%' }}
-        showGrid={false}
       />
     );
   }