note Flint, and by extension Flintlock, is not maintained in this repository at this point, or anywhere else as far as I know. For alternatives, look to https://github.com/Keboo/PebbleSharp and associated products (maybe) or other newer projects.
Flintlock is a Windows application that interacts with Pebble smartwatches using the flint library. So far only tested with Windows 7 32-bit, but anything from 2000 and up is expected to work.
Binaries can be had at http://barometz.github.com/flintlock/ under "Releases" - after pairing your Pebble with your computer everything should work pretty much automagically, although no guarantees are made. Some strange behaviour is currently expected after a failed reconnection attempt, this can be reset by scanning again or restarting the application.