Added bottom sheet example app (#64)

bottom_sheet/lib/home.dart

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+import 'package:flutter/material.dart';
+import 'package:project/models/ListTileModel.dart';
+
+class MyHomePage extends StatefulWidget {
+  MyHomePage({Key key, this.title}) : super(key: key);
+
+  final String title;
+
+  @override
+  _MyHomePageState createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
+        backgroundColor: Colors.redAccent,
+      ),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            new RaisedButton(
+              child: Text(
+                "Bottom Sheet",
+                style: TextStyle(fontSize: 20),
+              ),
+              onPressed: () {
+                _openBottomSheet(context);
+              },
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+void _openBottomSheet(context) {
+
+  showModalBottomSheet(
+    context: context,
+    builder: (builder) {
+      return new Container(
+        padding: EdgeInsets.all(5.0),
+        child: new Wrap(
+          children: <Widget>[
+            getListTile(Icons.more, Colors.black45, "More", context),
+            getListTile(Icons.favorite, Colors.pink, "Favourites", context),
+            getListTile(Icons.account_box, Colors.blue, "Profile", context),
+            new Divider(
+              thickness: 2.0,
+              height: 10.0,
+            ),
+            getListTile(Icons.exit_to_app, null, "Logout", context),
+          ],
+        ),
+      );
+    },
+  );
+}

bottom_sheet/lib/main.dart

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+import 'package:flutter/material.dart';
+import 'package:project/home.dart';
+
+void main() {
+  runApp(MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  // This widget is the root of your application.
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Bottom Sheet',
+      theme: ThemeData(
+        primarySwatch: Colors.red,
+        visualDensity: VisualDensity.adaptivePlatformDensity,
+      ),
+      home: MyHomePage(title: 'Bottom Sheet'),
+    );
+  }
+}
+

bottom_sheet/lib/models/ListTileModel.dart

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+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(),
+  );
+}