Installation instructions.

README.md

 irodstools
 ==========
 
-Tools For Using PHP iRODS with Drupal 7
\ No newline at end of file
+Tools For Using PHP iRODS with Drupal 7
+
+This package requires a modified version of the iRODS PHP client found here:
+
+https://github.com/colinsf/Prods
+
+It should be installed to sites/all/libraries, but the Drupal module has options for changing the installation location configuration.