Add missing items in onNavigationItemSelected()

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/MainActivity.java

@@ -104,6 +104,10 @@ public class MainActivity extends AppCompatActivity
 
         } else if (id == R.id.nav_map) {
 
+        } else if (id == R.id.nav_contacts) {
+
+        } else if (id == R.id.nav_about) {
+
         }
 
         DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);

app/src/main/res/menu/activity_main_drawer.xml

@@ -2,7 +2,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools" tools:showIn="navigation_view">
 
-    //TODO Update icons
+    <!--TODO Update icons-->
     <group android:checkableBehavior="single">
         <item android:id="@+id/nav_feed" android:icon="@drawable/ic_feed"
             android:title="Feed" />