added spline functionality, which models postivie vs negative tweets per second. bugs to work out: on mobile, when a user does not enter a filter on the alert and presses cancel, the search variable is not defined and nothing works. additionally, when a user restarts the clock, the spline stops working. Is the restart clock even necessary? next: fix those 2 bugs, then tons of jasmine, final data analytics idea implementation ideas, style, and polish