PR to merge "hit-api" to the "develop"

In this branch, I have done the following changes.

Create a new game with the name "my cool game" using the API from the Leaderboard API service.
Save the ID of the game returned by API in the local browser storage.
Implement the "Refresh" button that will get all scores for a game from the API (receiving data from the API and parsing the JSON).
Implement the form "Submit" button that will save a score for the game created (sending data to the API).

AliRezaBmeDu / leaderboard