Add README and Gemfile

Gemfile

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+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+gem 'matrix_sdk', '~> 2.0'
+gem 'faraday', '~> 1.0'

README.md

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+# Chronicle
+
+Chronicle is a multi-purpose chat bot.
+
+It currently supports Matrix, but has ambitions of supporting Discord in the
+future.
+
+Chronicle is still heavily work-in-progress, and the hobby of an occasionally
+productive fellow.
+
+## Features
+
+- Ping (returns Pong!; good for testing connectivity)
+- Dice Roller (`!roll 2d4` -> `Roll: 2d4 ([2, 1]) ==> 3`)
+- Ad-hoc simple custom commands (`!addcommand hello Hey there!` --> `!hello` -->
+    `Hey there!`)
+- More to come!
+
+## Planned Features
+
+- [ ] 8-ball (`!8ball Will I win the lottery?` --> `Try again later`)
+- [ ] Simple calculator (`!calc 8 + (9-10)` --> `Calc: 8 + (9 - 10) ==> 7`)
+- [ ] Simple games (Blackjack, High/Low)
+- [ ] A "mystery" game (Kind of like _Clue!_ or _Noir Syndrome_)
+- [ ] A "progress quest" like game (time-based character auto-progression)
+- [ ] Expanded custom commands (allow for commands with arguments)
+- [ ] Enabling of add-on features (ie., everything mentioned above) per room
+- [ ] Establish/restrict command permissions per user/role per room.
+- [ ] Change the command prefix (from default `!` to whatever you'd like!)
+- [ ] Run in a Docker container!
+
+# Development
+
+You can run your own instance of Chronicle with a few steps:
+
+1. Fork the repository, and clone it locally
+2. Setup a bot user in Matrix, and get it's "Access Token" (or use your own).
+3. Export the access token to CHRONICLE_ACCESS_TOKEN for ease of use
+4. Run `bundle update` to install dependencies.
+5. Run `bundle exec chronicle -d <your-homeserver-address-here>
+   <access-token-here>`
+6. Invite the bot user to a room, and `!ping` to make sure it's working!
+
+# Contribute
+
+If you are interested in contributing to Chronicle, first let me say thanks!
+Next, please follow these steps:
+
+1. Fork the repository, and perform any changes you'd like.
+2. Submit a pull request, explaining the changes.
+3. Work with me to get those changes merged.
+
+Chronicle is a hobby project, and as such I may not be immediately responsive to
+any requests. Please do not be discouraged! I will try to address any issues or
+pull requests in a reasonable time.
+
+# Issues
+
+If you find something amiss with Chronicle, please submit an issue! I will try
+to address it in a reasonable time.
+
+# Contact
+
+If you're interested in discussing Chronicle, you can speak with me on Matrix!
+I'm [Vagabond](https://matrix.to/#/@vagabondazulien:exp.farm).