added gh repo link in about

lib/views/about.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import "package:iiitb_menu/constants.dart";
+import "package:url_launcher/url_launcher.dart";
 
 class AboutPage extends StatelessWidget {
   const AboutPage({Key? key}) : super(key: key);
@@ -7,13 +9,15 @@ class AboutPage extends StatelessWidget {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: const Text("About")),
-      body: const Column(
+      body: Column(
         children: [
-          Padding(
-            padding: EdgeInsets.only(left: 100, right: 100, top: 50),
-            child: Image(image: AssetImage("assets/plate.png")),
+          const Flexible(
+            child: Padding(
+              padding: EdgeInsets.only(left: 100, right: 100, top: 50),
+              child: Image(image: AssetImage("assets/plate.png")),
+            ),
           ),
-          Center(
+          const Center(
             child: Text(
               "IIIT Bangalore's Unofficial Menu App",
               textAlign: TextAlign.center,
@@ -22,13 +26,21 @@ class AboutPage extends StatelessWidget {
               ),
             ),
           ),
-          Center(
+          const Center(
             child: Text("Proud Ass Web 1.0 App built with Flutter"),
           ),
-          Center(
+          const Center(
             child: Text(
                 "Menu updates every other Tuesday or when FoodComm does it."),
-          )
+          ),
+          InkWell(
+              child:
+                  const Image(image: AssetImage("assets/gh.png"), height: 20),
+              onTap: () async {
+                if (await canLaunchUrl(ghURI)) {
+                  launchUrl(ghURI);
+                }
+              }),
         ],
       ),
     );