Uninstallation guide:

To uninstall the extension in Chrome, go to chrome://extensions/ and locate "<Extension>", click on Remove and you will be prompted with a pop up "<Extension>", click the Remove button.

To uninstall the extension in Firefox, click the Menu button, select Extensions and locate the Extension you wish to Uninstall, then click on the ellipsis icon and click Remove. You will be prompted with a pop up "Removing <Extension>?", click the Remove button.