Added the random selection to the colour picker view. 
closes #15
Created a class that collects the users reactions to the stimulus. 
closes #23
Added a trigger to adjust the layout to the device screen size and orientation when a screen change occurs. #18
Added a results summary screen. #19
Added a trigger to adjust the layout to the device screen size and orientation when a screen change occurs. #18
Added a results summary screen. #19
Added styling and right align to the next button in the footer.
Added a trigger to adjust the layout to the device screen size and orientation when a screen change occurs. #18