Added a dialogSpeed to the example.

This lets us experience the difference between the dialogSpeed of Eric and Jeff's.
Reinitialized the displaySpeed in LNVL.Advance.

This lets us modify the displaySpeed at our will without worrying about not having a default one.
Added a dialogSpeed element to each character.

This element determines the speed at which the dialog will be displayed when this character is talking.
Added a displaySpeed initialization in DrawText.

This lets us change the display speed at our will depending on the character. I also added a default value for this display speed to ensure we always have one.
Modified the call to LNVL.Graphics.DrawText.

Added a variable to modify the displaySpeed within LNVL.Graphics.DrawText.