Add CI job to test user installation steps

Author: eskaur

.github/workflows/main-workflow.yml

@@ -17,8 +17,7 @@ jobs:
         python -m pip install --upgrade pip
         python -m pip install -r requirements.txt
     - name: Lint
-      run: |
-        ./ci/lint.sh
+      run: ./ci/lint.sh
 
   Testing:
     runs-on: ubuntu-latest
@@ -36,3 +35,21 @@ jobs:
       run: |
         python -m pip install .
         python -m pytest --verbose . 
+
+  Installation:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.6
+    - name: Install library
+      run: python -m pip install .
+    - name: Basic test of CLI-tools
+      run: |
+        cd $(mktemp -d)
+        python -m timelapse.launch -h
+        python -m timelapse.process -h
+
+