fix quest data and update for new xiv api format

.gitignore

@@ -21,3 +21,4 @@ symlink-from
 .idea/
 build/
 .vscode/settings.json
+.venv/

data/README.md

@@ -2,10 +2,28 @@
 
 The idea of this script is to pre-process Quest data from the datamining repository and convert it into a format that can be used by the application.
 
-## Why?
+### Why?
 
 The goal is to not rely on XIVAPI for quest data, pre-processing data also makes loading faster and for fun; trying to understand how the data is structured.
 
-## Doesn't that mean you have to re-build the application every time the data changes?
+### Doesn't that mean you have to re-build the application every time the data changes?
 
 Yes.
+
+## Usage
+
+Prepare a python3 venv,
+
+```sh
+python3 -m venv .venv
+source .venv/bin/activate  # macOS/Linux
+.\.venv\Scripts\activate   # Windows
+pip install -r requirements.txt
+```
+
+then run,
+
+```sh
+cd .. # must be in the root directory
+npm run quests
+```