add tbe alias for time bundle exec
allow Control-S: Control-R in reverse
ttbe - time bundle exec in test mode
bx: bundle exec short cut.
white space.
comment out /opt/local directorys
comment out /opt/local reference to bash_completion.

* using brew's instead.
add Postgres.app bin to PATH
add ps1 file.
update reference to bash and git completion to use brew.
add rvm to PATH for scripting
add vi mode into irb.