juju/docs — pull request #130 by sinzui (2014-06-30 19:56:23+00:00)
Title: Instance type constraint

Update constraints reference to 1.20.0
- Move instanct-type back to current constraints.
- Add the network constrain
- Add an explanation of constraints based on the help.

This branch depends on https://github.com/juju/docs/pull/128 which fixes the formatting.