Update readme

README.md

@@ -2,6 +2,26 @@
 
 Script to export parts and drawings to production files (part -> step, dxf, pdf)
 
+## Install:
+
+### Prerequisite:
+- python
+- (git)
+
+1. Get the code:
+
+- `git clone https://git.lurenaud.com/lurenaud/SldwrksExporter.git`
+
+2. Setup python env
+
+- create venv `python -m venv .venv` 
+- activate environement `.venv\Script\Activate.ps1` 
+- install requirements `pip install -r requirements.txt`
+
+## Common errors:
+- Cannot activate venv, script : in an admin terminal run `Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser`
+
+
 ## Use:
 
 `.\run.py path\Part1` (without extension) will generate step, pdf and dxf in path