Update copyright to 2014
Clear the terminal screen before running specs

* clear away the text/noise to help focus on the current test
* helps to see what test is being ran
if last window is busy, open a new window for running tests
Change directory if there are two arguments
open a new window instead of the tab
Do not parse out commands from parameters
When opening a new tab make sure to run the command in that new tab
Better check for when new tab is available for use
Merge branch 'open_new_terminal_window_if_busy' of github.com:ilyakatz/vim-rspec into open_new_terminal_window_if_busy