Fix path references in notebook/README + Workflow python version update,

.github/workflows/main.yml

@@ -10,10 +10,10 @@ jobs:
         with:
           submodules: true
           lfs: true
-      - name: Python 3.7
+      - name: Python 3.8
         uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Dependencies
         run: |
           sudo apt-get install libcurl4-openssl-dev

README.md

@@ -23,7 +23,7 @@ Eprint = {arXiv:1812.05752},
 The total dataset is ~100GB and can be downloaded [here](http://academictorrents.com/details/65a2fbc964078aff62076ff4e103f18b951c5ddb) It is divided into ~10GB chunks.
 
 ## Example Code
-There is an example data segment in this repo for experimentation. There are also some notebooks with some example code. Including a position benchmark. This code has only been tested on python 2.7 and python 3.6. Make sure to `pip install -r requirements.txt` if you do not have the relevant packages installed already. Additionally, make sure to add the `openpilot` submodule and `notebooks/lib` module to your `PYTHONPATH`.
+There is an example data segment in this repo for experimentation. There are also some notebooks with some example code. Including a position benchmark. This code has only been tested on python 2.7 and python 3.6. Make sure to `pip install -r requirements.txt` if you do not have the relevant packages installed already.
 The examples contain a 1 minute sample segment and some sample notebooks.
 * processed_readers: some examples of data reading and plotting
 * position_benchmarks: example of running the position benchmark used to evaluate fix quality