Avoid service duplication in README (see: https://github.com/toddmotto/public-apis/pull/259#issuecomment-269635584).

https://developer.riotgames.com/docs/api-keys

Removed Hummingbird and updated with the Kitsu api details.

Source: https://medium.com/heykitsu/hummingbird-is-dead-long-live-kitsu-bda6ccfbbcce#.xixj9r30c
https://forums.hummingbird.me/t/kitsu-api-documentation/33367

Add Google Drive API

A section title of "exchange" is a bit vague when searching for a currency API, so add "currency" to the section title to make life, and searching, easier.

re-ordered health section

added diabetes api

Discogs uses/requires OAuth.

Added the "WhereIsMyTransport" transportation API.

Similar to the Media section, by moving the Planets section into Science, it creates a more concise way for users to search (i.e. no need to check Science, and then go back and look for another section to cover what they are looking for).

Update Alphabetical ordering of P's and header size of Photography

Add Dailymotion API under Video. Dailymotion is a video-hosting site similar to Vimeo and YouTube.

The Media category was becoming too vague and too cluttered with items that fell into other, already existing, categories. By breaking up this category, we are able to allow viewers to quickly find what they need, instead of making them search the category they want and then have to double-check the "catch-all" basin that was Media.

Added Forismatic API, which provides "the most inspiring expressions of mankind."

Also edited Faceplusplus link to match other links in the list (GO! -> Go!)

Added the Wunderlist (Todo Management) API to the Documents & Productivity section. Not sure if it's the correct section for that?