This project sync's "todays" time from WakaTime to corresponding Projects in FreshBooks given that the ID of a Task that exists in Freshbooks is given as well as both project names are the same.
First you'll need composer. Download and install composer from their website: http://getcomposer.org
Then run in terminal on OSX/Linux:
git clone https://github.com/jostrander/freshbooks-wakatime.git
composer install
mv .env.example .env
Once you've done that update your .env to your correct API Keys and Freshbooks Task ID.
If you want this to run every day, you'll need to set up a cron job similar to:
0 22 * * * /usr/bin/php /path/to/run.php
And that's it!