remove black from main build, add windows

Author: terriko

.github/workflows/pythonapp.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-         os: [ubuntu-latest]
+         os: [ubuntu-latest, windows-latest]
          python: [3.6, 3.7]
     steps:
     - uses: actions/checkout@v1
@@ -27,11 +27,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt
-    - name: Lint with black
-      run: |
-        pip install black
-        black --check cve_bin_tool/
-        black --check test/
     - name: Run tests
       run: |
         ACTIONS=1 python setup.py test