The opening keynote for Google I/O 2012 just wrapped up, complete with Android 4.1 Jelly Bean, the Nexus 7 tablet, the Nexus Q and an insane Google Glass product demo.

There were some changes brought to the Google Play Store as well. One of the changes wasn't even mentioned during the keynote -- the ability to update or uninstall apps on your Android device, directly from the Google Play Web site. A small feature, but one that is sure to come in handy to many users. Here's how it works.

Visit play.google.com on your computer and log in to your account.

Click on the My Android Apps tab to view the apps installed on your device.

Screenshot by Jason Cipriani/CNET You will then see a grid of apps currently installed on your device; if any apps have an update available, those apps will appear on the list first. If nothing has an update, your apps will be in alphabetical order.

To send the app update to your device, click on the update button. The update will automatically be sent to your device, the same way you would normally install an app from Google Play.

Notice the trash icon? Clicking on that will uninstall the app from your Android device. As you'll see below, I finally got around to cleaning up apps on my device that I'd been meaning to delete. Thanks, Google. Screenshot by Jason Cipriani/CNET

Pretty simple, right? Subtle changes made to Google Play, but changes that are very welcome to see.