I am also having troubles with the install. There is no readme file or any documentation with the download itself, and it's not showing up in my Addons area within WHMCS after uploading the file to my addons directory, unzipping it, chowning it to the correct user and so forth. I'm going to go back to your site to see if you've got documentation I missed on the first pass, as it looks like you were going to update the docs over a year ago.
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Ok, I found this:
http://zignut.com/forge/projects/zstripe/wiki/Installation
I had originally looked under "Documentation."
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Still no joy.
/home/host/public_html/whmcs/modules/gateways
drwxr-xr-x 2 host host 4096 Feb 9 10:54 zstripe/
>> cd zstripe/
-rw-r--r-- 1 host host 33527 Feb 9 10:51 zStripe-1.34.zip
-rw-r--r-- 1 host host 6131 Dec 6 08:46 zstripe_license.txt
-rw-r--r-- 1 host host 39886 Dec 28 13:45 zstripe.php
There is still no Stripe or zStripe in my payment gateways setup area. Any help? Thank you.