Add discord.js and base URL (discord#22)

* Add discord.js to the list
With dev confirmation in Discord

* Add base URL (fix discord#21)

docs/REFERENCE.md

@@ -2,6 +2,14 @@
 
 Discord's API is based around two core layers, a HTTPS/REST API for general operations, and persistent secure websocket based connection for sending and subscribing to real-time events. The most common use case of the Discord API will be providing a service, or access to a platform through the [OAuth2](http://oauth.net/2/) API.
 
+## Base URL
+
+The base URL for all API requests is:
+
+```
+https://discordapp.com/api
+```
+
 ## Authentication
 
 Authenticating with the Discord API can be done in one of two ways:

docs/topics/LIBRARIES.md

@@ -14,6 +14,6 @@ The following is a set of recommended libraries that are _not_ maintained by Dis
 | [DiscordPHP](https://github.com/teamreflex/DiscordPHP)* | PHP |
 | [DiscordSharp](https://github.com/Luigifan/DiscordSharp) | C# |
 | [Discord.Net](https://github.com/RogueException/Discord.Net) | C# |
-
+| [discord.js](https://github.com/hydrabolt/discord.js) | NodeJS |
 
 \* *DiscordPHP is maintained by someone who [isn't very good](https://twitter.com/Orcon/status/714538083656404992) at Counter-Strike: Global Offensive, and regularly loses 1v1s. Use at your own risk.*