refactor some osx commands; add mysql/mongo start/stop
back to one-line prompt (virt env in window title)
use rbenv now instead of rvm
nolonger include janus as a submodule

Still should use janus, just set up manually instead of normal dotfile
script.  Maybe will automate that via makefile later
add standard unicode and server stuff
osx commands refactored into bash_startup/osx