Update README.md

Author: TomasKulhanek

README.md

@@ -13,12 +13,15 @@ except standard Modelica library, no other dependencies are needed
     * each model in Examples package shows some feature on concrete model of drug pharmacokinetic, pharmacodynamic and pharmacogenomic. Sample model with complex physiologically based model is also shown.
 
 ## Integration to computational workflow
-  * prepare virtual env in python
+  * got so `sim` directory 
 ```bash
+cd sim/
+```
+  * and prepare virtual env in Python
 python -m venv venv
 source venv/bin/activate
 ```
-  * install requirements
+  * install requirements as specified in `requirements.txt` file
 ```bash
 pip install -r requirements.txt
 ```
@@ -27,7 +30,7 @@ pip install -r requirements.txt
 jupyter lab
 ```
   * jupyter opens in a browser interactive interface, open notebook `PK_2C_IVMidazolam.ipynb`
-  * the demo contains exported 2-compartment model of Midazolam administered intravenously in FMU, its usage with `fmpy` library and integration with pharmacokinetic database containing growing number of human and machine readable data of drugs https://pk-db.com
+  * the demo contains exported 2-compartment model of Midazolam administered intravenously in FMI, its usage with `fmpy` library and integration with pharmacokinetic database containing growing number of human and machine readable data of drugs from https://pk-db.com
 
 ## Simulator
 Live sample web simulator at: https://egolem.online/pharma