update readme and force 2.0.0rc4 in requiermnets

README.md

@@ -4,9 +4,10 @@ A map-based social gardening
 
 - `./setup_packages.sh` - install ubuntu system package requierments
 - `./setup_venv.sh` - prepares the virtual environment using kivy 2.0.0rc3 with python 3.8 (ubuntu 20.04)
+- `.source globalforest/venv/bin/activate` - switch context to python virtual environment
 
 - `python3 populatedb.py trees.kml`
 
 - `./start.sh` - run the virtual environment locally
 - `./build.sh` - run buildozer inside the virtual env to build and deploy
-- `./cleanup.sh` - removes the work dirs from the local repo
+- `./cleanup.sh` - removes the virtual environment from the local repo

requierments.txt

@@ -1,4 +1,4 @@
-Kivy
+Kivy==2.0.0rc4
 pydle
 ffpyplayer
 sqlite_utils