Added simple collision detection on the x-axis.
Modified the #create method to be called with the number of rows and columns.
Removed the tileSize local variable.
Removed the quotes from the names of the properties.
Created the #checkVertical method to return the allowed position in the vertical axis.
Created the #checkHorizontal method to return the allowed position in the horizontal axis.
Used timeouts for moving the ball and removing tiles to display collisions.