Created grass spite in spritesheet.png

Also created a grass sprite object, still need to create spritesheet
object for the grass sprite texture
Grass Sprite Displayed on screen now, almost forgot that sprite
constructer needed to call on it's load method and the game rendered
nothing. fixed now though.
edited the render method, allowing the player to move the background
tiles(grass for now), game now requests focus when run so no more
clicking the game window before you can move.

inverted keyboard controls to make sense in terms of being a player e.g
background moving left as you move right etc. next step is creating some
level, see where the next video leads. Gonna go throw all the code soon
and comment on each line to make sense of the game logic so far.