$ sbt ... > update ... > run ... (authorize the app with a browser, note pin) > run <pin> > run
And you're streaming. (Tell your friends to tweet something, maybe.) There is not a graceful way to exit currently (forks welcome), so just ctrl+c to blow out of twine and sbt if you're done.
You can also pass in a tweet to post it.
> run "Hey u guys I finally fixed up Dispatch's Twine example: https://github.com/n8han/dispatch-twine"
Add "-Dfile.encoding=UTF-8" to your sbt start script if you want non-ASCII characters to render in utf-8, which your terminal may correctly display.