Improve README

Author: msaroufim

README.md

@@ -2,6 +2,8 @@
 
 A command-line interface tool for submitting solutions to the [Popcorn Discord Bot](https://github.com/gpu-mode/discord-cluster-manager)
 
+Tested on linux and mac but should just work on Windows as well.
+
 ## Installation
 
 ### Option 1: Using pre-built binaries (Recommended)
@@ -12,16 +14,23 @@ A command-line interface tool for submitting solutions to the [Popcorn Discord B
 
 ### Option 2: Building from source
 
-This app is written in Rust, so you can just install it via `cargo install`
+1. Download rust `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
+2. `cd popcorn-cli && cargo install --path .`
 
-## Usage
+## Authentication
 
-Set the `POPCORN_API_URL` environment variable to the URL of the Popcorn API. You can get this from the [GPU Mode Discord server](https://discord.gg/gpumode).
+Since we're effectively giving out GPUs for free we rely on either github or discord authentication to prove that you're a real human before you access our service.
+
+1. Go to the [GPU Mode Discord server](https://discord.gg/gpumode) and type in `/get-api-url/`
+2. Copy paste that url out `export POPCORN_API_URL="result_of_get_api_url"`
+3. We recommend you authenticate via your Discord as this will guarantee that your name will show up correctly on the leaderboard, you can do this via `popcorn-cli register discord`. However in case this doesn't work for you we also support Github based authentication with `popcorn-cli register github`
+4. To ensure the above worked you can run `cat $HOME/.popcorn.yaml` which should print your client ID which is what will be sent to us on every request
 
-Then, you need to be registered to use this app. You can register by running: `popcorn-cli register [discord|github]`. We strongly reccomend using your Discord account to register, as this will match your submissions to your Discord account.
-Once you're registered, there is a file created in your `$HOME` called `.popcorn-cli.yaml` that contains your registration token. This token is sent with each request.
+Sometimes you'll get an error that you're already authenticated despite being unable to submit in which case you can run `popcorn-cli reregister [discord|github]`.
 
-If you want to re-register (you can do this any number of times), you can run `popcorn-cli reregister [discord|github]`.
+Set the `POPCORN_API_URL` environment variable to the URL of the Popcorn API. You can get this from the [GPU Mode Discord server](https://discord.gg/gpumode).
+
+## Make your first submission
 
 After this, you can submit a solution by running:
 
@@ -34,3 +43,5 @@ The interactive CLI will guide you through the process of:
 2. Selecting GPU options
 3. Setting submission mode
 4. Submitting your work
+
+glhf!