added pull price method, and

prepped to restart on the update method, because i've been having mental
retardation while making this.... so there you go :P
redid the update cycle, now for testing....
comments...

the checking if the value entered is greater/less than the current value
seems to not be affecting anything... like, testing, entered value is
2.0. bit coin goes from 1.9 to 2.1, and no notification. though if the
bitcoin goes to 2.0, the "same price" error occurs.