It allows you to edit your bash scripts from your local pc using a google Chrome add-on called zed-editor:

https://chrome.google.com/webstore/detail/zed-code-editor/pfmjnmeipppmcebplngmhfkleiinphhp?hl=en

After opening the program you will need to navigate to 'Remote Folder'. Once you here you will see 3 parts.

Part 1 - zedrem URL (OPEN)
Part 2 - curl http://get.zedapp.org | bash
Part 3 - ./zedrem

Use part 2 (curl) to download the zedrem tool into your root directory, or the directory you wish to edit. Once this has been downloaded you can run the following in the directory you just downloaded the files.

./zedrem

This should produce a URL which you can then enter into zedrem. Note: This does not work most of the time. You will need to set up your own proxy on you server. This is easy!
Open up 2 new terminals to your server. In one of the terminals run the following command to configure it as a zedrem server:

./zedrem --server

In the other terminal run:

/zedrem -u ws://yourserverip:7337

You may also need to open port 7337