Update readme

Author: mrcnski

.github/workflows/pr.yml

@@ -8,8 +8,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.5, 3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v2

README.md

@@ -10,12 +10,30 @@ An SDK for integrating Skynet into Python applications.
 
 ## Instructions
 
-We recommend running your Python application using [pipenv](https://pipenv-searchable.readthedocs.io/basics.html). You can use `siaskynet` by installing it with `pip`, adding it to your project's `Pipfile`, or by cloning this repository.
+We recommend running your Python application using [pipenv](https://pipenv-searchable.readthedocs.io/basics.html).
+
+You can use `siaskynet` by installing it with `pip`, adding it to your project's `Pipfile`, or by cloning this repository.
 
 ## Documentation
 
 For documentation complete with examples, please see [the Skynet SDK docs](https://siasky.net/docs/?python#introduction).
 
 ## Contributing
 
-To run lints and tests on `python-skynet`, first run `make install` to install dependencies and then `make lint` or `make test`.
+To run lints and tests on `python-skynet`, first install dependencies:
+
+```
+make install
+```
+
+Now you can run
+
+```
+make lint
+```
+
+or
+
+```
+make test
+```