install requirements in README

README.md

@@ -20,12 +20,13 @@ REGIONS = {
 ## Requirements
 
 * Python
-* pyproj (https://pypi.org/project/pyproj/)
+* pyproj (https://pypi.org/project/pyproj/), requests, shapely.
 * SimStadt/RegionChooser (https://simstadt.hft-stuttgart.de/getting-started/install-software/)
 
 ## Usage
 
-* Specify desired regions in REGIONS:
+* In order to be sure dependencies are installed, you can run `pip install -r requirements.txt` inside `get-bw-opendata` folder.
+* Specify desired regions in REGIONS inside `download_files_from_LGL_BW.py`:
     * as WKT Polygon (https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry). For example from https://wktmap.com/
     * as a ZipCode (e.g. `"70567"`)
     * or a list of Zipcodes, separated by a comma (e.g. `"79098,79102"`)