[Buildbot] #2087: move dev docs to sphinx

[Buildbot trac]

#2087: move dev docs to sphinx
------------------------+--------------------
Reporter:  dustin       |       Owner:
    Type:  enhancement  |      Status:  new
Priority:  major        |   Milestone:  0.9.+
 Version:  master       |  Resolution:
Keywords:  docs         |
------------------------+--------------------

Comment (by sa2ajj):

 What this ticket is about?  By just reading it, I do not understand where
 we are.

--
Ticket URL: <http://trac.buildbot.net/ticket/2087#comment:2>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation