chore: update todo readme

examples/v3/todo/README.md

@@ -11,22 +11,51 @@ Until the beta version of Pact-Python with V3 support is released, you need to d
 
 Use the Rustup tool from https://rustup.rs/ to do this.
 
-2. Generate the pact_python_v3 wheel
+2. Setup a Python virtual environment
+
+```console
+$ python3 -m venv venv
+$ source venv/bin/activate
+```
+
+3. Generate the pact_python_v3 wheel
 
 In the pact-python-v3 directory, use maturin to create the wheel for your architecture and OS:
 
 ```console
-$ cd pact-python-v3
+$ cd ../../../pact-python-v3
 $ maturin build
 ```
 
 This should output the path to the newly created wheel.
 
-3. Install the wheel with pip
+4. Install the wheel with pip
 
 ```console
 # NOTE: this path is architecture and OS dependent, don't just copy this line and hope it works for you
-$ pip install pact-python-v3/target/wheels/pact_python_v3-0.0.0-cp38-cp38-manylinux2010_x86_64.whl
+$ pip install ../../../pact-python-v3/target/wheels/pact_python_v3-0.0.0-cp38-cp38-manylinux2010_x86_64.whl
+```
+
+5. In the project root, build the Pact-Python package as per the instructions in the Readme
+
+```console
+$ cd ../../..
+$ make package
+```
+
+**NOTE:** I had to run the package command myself, because I have both Python 2 and 3 and the 
+make file was picking up Python 2
+
+```console
+$ # If the command above fails 
+$ python3 setup.py sdist
+```
+
+6. Install the Pact Python package
+
+```console
+$ cd -
+$ pip install ../../../dist/pact-python-2.0.0b0.tar.gz 
 ```
 
 5. Install all the required packages