Map attribution & map layers plugin

lib/attributionMapPlugin.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/src/widgets/framework.dart';
+import 'package:flutter_map/plugin_api.dart';
+
+class AttributionPluginOptions extends LayerOptions {
+  final String text;
+
+  AttributionPluginOptions({this.text = ""});
+}
+
+class AttributionPlugin implements MapPlugin {
+  @override
+  Widget createLayer(LayerOptions options, MapState mapState) {
+    if (options is AttributionPluginOptions) {
+      var style = new TextStyle(
+        // fontWeight: FontWeight.bold,
+        fontSize: 12.0,
+        color: Colors.white,
+      );
+      return Padding(
+        padding: const EdgeInsets.all(5.0),
+        child: new Text(
+          options.text,
+          style: style,
+        ),
+      );
+    }
+    throw ("Unknown options type for Attribution"
+        "plugin: $options");
+  }
+
+  @override
+  bool supportsLayer(LayerOptions options) {
+    return options is AttributionPluginOptions;
+  }
+}