To generate the user guide website locally, cd into the finagle
directory and run the following commands.
$ ./sbt finagle-doc/make-site
$ open doc/target/site/index.html
To publish a new version of the user guide to GitHub Pages:
1. Make sure SBT sees the current version as the release version of
Finagle (and not the SNAPSHOT version) by running from the master branch.
2. Execute the script `finagle/pushsite.bash`.