Fix bug where riot_API was not correctly sending summoner ID info.

In addition, also refactor to appending API key to URL.
Add functionality to read various stats from recent ranked games.

Currently reads w_placed, w_killed, d_dealt and d_took from json
and sends it back in the form of a dictionary.
Update index to print out summoner ID for person who is typed in.
Ignore text files made for testing.
Feature for retrieving relevant stats for a given summoner and all teammates.

riot_API now has many helper functions and the basic workflow of the calls implemented in the "main" function.