Added bottom sheet example app (#64)

bottom_sheet/lib/models/ListTileModel.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+
+ListTile getListTile(icon, iconColor, titleText, context) {
+  return new ListTile(
+    leading: new Container(
+      width: 4.0,
+      child: Icon(
+        icon,
+        color: iconColor,
+        size: 24.0,
+      ),
+    ),
+    title: new Text(
+      titleText,
+      style: TextStyle(
+        fontSize: 14.0,
+        fontWeight: FontWeight.w700,
+      ),
+    ),
+    onTap: () => Navigator.of(context).pop(),
+  );
+}