Add temp link to docs pullrequest

README.md

 Aegir Distributions
 ===================
 
-This module is documented in the main Aegir docs: http://docs.aegirproject.org/usage/advanced/distributions.
+This module is documented in the main Aegir docs: http://docs.aegirproject.org/usage/advanced/distributions. TEMP in progress on https://github.com/aegir-project/documentation/pull/37
 
 
 Testing