Add link to Discord

README.md

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 `srcr` is a full-scale API wrapper for the [speedrun.com](https://www.speedrun.com) [API](https://github.com/speedruncomorg/api) written in [Crystal](https://crystal-lang.org/). The goal of this implementation is to provide as much data as possible / reasonable. As such, this library makes use of [embedding](https://github.com/speedruncomorg/api/blob/master/version1/embedding.md) wherever possible. Where something cannot be embedded for some reason, the library provides shorthand methods to request the data.
 
+If you need any help with this library, feel free to reach out on the [Shard Lab Discord server](https://discord.gg/uQUrUndK6u).
+
 ## Installation
 
 1. Add the dependency to your `shard.yml`: