create_game_html_url: Create the url with the location of raw NFL play-by-play HTML
Description
This function pastes creates the url for the provided game id. The returned
url is used in the various play-by-play functions to access play-by-play data
from the raw HTML page.
Usage
create_game_html_url(game_id)
Arguments
game_id
(character or numeric) A 10 digit game id associated with a
given NFL game.
Value
String url where the raw HTML play-by-play data can be found (going
back to 1998 for regular season, 2000 for pre season).