Generating language packs with 1 click is cool, but what if you want to further automate the process? This is where the webhooks come into the game. Transifex will notify your site in case something changes with a translation (for example when it is 100% complete). To make use of this feature on the projects page in transifex you will see a column called webhooks. Copy the URL from there and paste it in your web hook URL in transifex.com (project's dashboard -> then manage project -> scroll down to find the field). Once you add the URL, transifex will always call it when something changes. Then we will generate the new language pack for the specific language.
Make sure that you've already generated the language files before starting to use this feature. (refer to "Generating language packs for the first time" section)