oddsapiR 0.0.1

• Added a NEWS.md file to track changes to the package.
• Four core exported functions:
  • toa_sports(): Get the Sports for which the Odds API provides coverage
  • toa_sports_odds(): Get the odds for the sports which the Odds API provides coverage
  • toa_sports_scores(): Get the scores for the sports which the Odds API provides coverage
  • toa_requests(): Get your usage and remaining calls for your key from The Odds API
• Tests added for each of the above functions.