Updated README to include info on commands.

README.md

@@ -1,3 +1,67 @@
 # Heimdallr
 This is a complete rewrite of the [Heimdallr bot](https://gitlab.com/NorwegianLanguageLearning/heimdallr) in Python.
 The rewritten version of Heimdallr supports multiple servers, and it should be easier to add new features.
+
+# Commands
+`Monospaced` text indicates command usage. `<argument>` indicates a required argument. `[argument]` indicates an optional argument.
+## Quote
+`quote <url>`
+
+`<url>` is a message link obtained by right clicking a message and selecting *Copy Message Link*.
+
+![The quote command being typed](_images/quote_command.png)  
+![The result of the quote command](_images/quote_example.png)
+
+The quote command allows users to quote a message in a manner that may be more suitable than replying to one to highlight it.
+It also allows quoting across different channels (and even servers, if Heimdallr is in both.)
+Heimdallr checks that the user can view the channel of the original message before quoting.
+
+By default, this command is available to everyone.
+
+## Role
+A simple system for self-serve roles.
+
+By default all `role` commands are available to everyone.
+### Role list
+`role list`
+List all available roles, with their descriptions and prerequisite role, if any.
+
+### Role add
+`role add <role>`
+Add a self-role to yourself. Available roles are autocompleted, and exclude already assigned roles.
+Note that it does not exclude roles with a prerequisite that the user does not have.
+
+### Role remove
+`role remove <role>`
+Remove a self-role. It shows only roles that you already have.
+
+## Role-admin
+Administration commands for self-roles.  
+
+By default it is available to those with the *Manage Roles* permission
+### Role-admin add
+`role-admin add <role> [description] [requires]`
+
+Add a role as a self-role.
+`[description]` is a description of the role, shown with `role list`. `[requires]` is an optional required role.
+
+### Role-admin remove
+`role-admin remove <role>`
+
+Remove a role from the available self-roles.
+
+## Warn
+`warn <user> [reason] [weight] [silent]`  
+`<user>`: the user to warn  
+`[reason]`: the reason for issuing a warning  
+`[weight]`: how severe the warning is. Default 1.0  
+`[silent]`: should the warning be silent, i.e. not sent to the user. Default false
+
+Warn will issue a warning to the user that is viewable through the infractions command. If `silent` is False (default), it will also attempt to send a message to them.
+
+By default it is accessible to those with the *Kick User* permission.
+
+## User-infractions
+`user-infractions <user>`
+
+Displays the infractions of a user.