Jonathan Sick walked us through LSST the Docs - what it is (what it's doing right now and what it will do) and how we will use it.
My takeaway:
LSST the docs (LTD) will be a very cool publishing platform for LSST, which will let you write technotes (in rst), documents (in latex), stand-alone python repositories, and code documentation (sphinx, sphinx + doxygen), and have it published to the web in a seamless process that also allows you to have multiple versions of each of these items. Examples: documentation of your code, plus documentation for a particular branch (or older version), or technotes that are in draft / stable / in-update versions, and which you can point your coauthors or users toward. The code documentation will allow API documentation which requires building the LSST software stack (not possible as part of Read The Docs).
Currently, LTD is ramping up and is mostly holding technotes and a few documents (LDM-151). In the F16 cycle, there will be significant updates to LTD, including letting users set up their own LTD sites automatically. For now, contact Jonathan when you're ready to set up a new project for LTD.
LTD uses travis to ensure that builds work; there is some setup to direct travis how to work. LTD-mason takes charge of this process (building with travis and publishing to the web) so be sure to read those notes about LTD-mason. LTD-keeper is (at least for now) primarily something SQuaRE needs to worry about - it tracks where LTD-mason publishes things (into the S3 bucket) and then controls how people access the resulting webpages (what the URL looks like).