Extra tasks nearly done

only have key input movement to go
created create triangle method
added triangle movement code to update to test myself :p
commented stuff!
All extra tasks of lab 1 done

triangle now moves on input
couple of questions for Brian at lab - relating to the "default" part of
the case statement
movement can only go in oe direction at a time, need to figure out how
to make it more fluid
add another variable, velocity perhaps?