Added additional details about testing and coverage analysis dependen…

…cies to CONTRIBUTING and README.

CONTRIBUTING.md

@@ -39,6 +39,12 @@ If you want to contribute code that fixes bugs or adds new features you can fork
 
 However, before doing so, please ask first. You can do so by commenting on the relevant Issue. This helps prevent duplicated or wasted efforts. 
 
+Note that for automated testing and coverage analysis requires the following:
+[pytest](https://docs.pytest.org/en/stable/getting-started.html), [Coverage.py](https://coverage.readthedocs.io/en/7.6.10/install.html), and [nose](https://nose.readthedocs.io/en/latest/).
+```
+pip install pytest coverage nose
+```
+
 PR contribution steps:
 
 1. [Fork the repo](https://github.com/blakeaw/pysb-pkpd/fork)

README.md

@@ -52,8 +52,18 @@ __`pysb-pkpd` enables you to efficiently program and simulate dynamic PK/PD and
 ### Dependencies
 
 Note that `pysb-pkpd` has the following core dependencies:
-   * [PySB](https://pysb.org/) - developed using PySB version 1.15.0
+   * [PySB](https://pysb.org/) - developed using PySB version 1.15.0, and recommended to install using conda/mamba.
+```
+conda install -c alubbock pysb
+```
 
+For automated testing and coverage analysis:
+   * [pytest](https://docs.pytest.org/en/stable/getting-started.html)
+   * [Coverage.py](https://coverage.readthedocs.io/en/7.6.10/install.html)
+   * [nose](https://nose.readthedocs.io/en/latest/)
+```
+pip install pytest coverage nose
+```
 
 ### pip install