Update readme

README.md

@@ -1,8 +1,45 @@
 # mkm junk rare finder
 
-## Build rare db
+## Requirements
+
+- Node
+- yarn
+
+## How to use
+
+### Get dependencies
+
+Just run `yarn`
+
+### Get API keys
+
+Go to https://www.cardmarket.com/en/Magic/Account/API and create a Dedicated app.
+
+Put the keys in your environment like so:
+
+```sh
+export APP_TOKEN=<App token>
+export APP_SECRET=<App secret>
+export ACCESS_TOKEN=<Access token>
+export ACCESS_SECRET=<Access token secret>
+```
+
+### Build card db
 
 To use the rare finder, you'll need to build the rare db
 
 1. Download this: https://www.mtgjson.com/files/AllPrintings.json
-2. Run `yarn convert-db`
+2. Run `yarn import-db`
+
+It will create a file called `mcmCards.json`
+
+## Fetch all cards listed by a user
+
+1. `yarn fetch <userid>`
+2. `yarn find <userid>`
+
+User ID can be either a username or user id on cardmarket
+
+## Create a cube out of the cheap rares!
+
+WIP, will be `yarn cube <userid>`