This is a Chrome extension that adds an "Add All Coupons" button to the Dollar General Digital Coupons Gallery. The Javascript action on this button will click on all the coupons in one shot, adding all of them to "My Coupons".
git clone this repository to your local disk or download the zip file and extract.
Go to the Chrome extensions page (chrome://extensions). You'll need to enable developer mode in order to load an unpacked extension.
Click on "Load unpacked extension" and navigate to the folder in which you cloned or extracted the source files. Select this folder to load the extension.
Once you've installed and enabled this extension, go to the Dollar General Digital Coupons Gallery and find the "Add All Coupons" button just above the first row of coupons. Click on it and it'll add all the coupons to "My Coupons".
Note: This button works only on coupons that are visible. To get them all, you have to keep scrolling to the end until all the coupons are loaded before clicking on "Add All Coupons".