message: Update readme.md
  Add link to CONTRIBUTING.md
diff: @@ -42,6 +42,11 @@ After you start the API it can take a minute or two before you can fetch the APY
  **/earnings**: Used to display the total and daily earnings of the platform.
  **/holders**: Used to display the total number of holders. This calc takes into account users with 0 BIFI in their wallet, but BIFI staked in the reward pool.
  +
  +## Contribute
  +
  +Beefy.Finance exists thanks to its contributors. There are many ways you can participate and help build high quality software. Check out the [contribution guide](CONTRIBUTING.md)!
  +
  ## License
  [MIT](LICENSE).
  