Selections now persist throughout transitions. Need to display text.

Transitions are still buggy, but will go with them for the time being.
Selections now persist throughout transitions. Need to display text.

Transitions are still buggy, but will go with them for the time being.
Merge branch 'arc' of https://github.com/cmdoptesc/2013-06-d3-exploration into arc

Conflicts:
	nextbus-d3.js
Refactored code.
Now displays multiple bus lines. Takes fastest 6 buses.
Implemented old deletion algorithm to get rid of buses that have departed.