Clean up PyTest README

PyTest/README.md

@@ -1,31 +1,20 @@
 # PyTest: Unit Tests for JSON-Schema-Analysis
 
-This directory and its subdirectories contain everything needed for running the defined unit tests for ___JSON_Schema_Analysis___.
-It uses *pytest* framework in version 4.3.0.
-
-## Preliminaries
-
-Before running the test you'll have to install *pytest* from PyPI by running the following instruction either in bash on Linux or in PowerShell on Windows.
-
-```PowerShell
-> pip install pytest
-```
+This directory and its subdirectories contain everything needed for running the defined unit tests for __JSON_Schema_Analysis__.
 
 ## Running the tests
 
-To run the test, navigate to your local version of the PyTest directory on your prefered CLI. Run the following command.
+To run the test, navigate to your local version of the PyTest directory on your preferred CLI. Run the following command.
 
-```PowerShell
-> pytest
-```
+    pipenv run pytest
 
-Pytest will automatically detect all files starting with test_ and include them in testing. In this case the only appropriate file is 
-test_schemagraph.py. 
+pytest will automatically detect all files starting with `test_` and include them in testing. In this case the only appropriate file is
+`test_schemagraph.py`.
 This file is implemented to accept test changes dynamically without touching the file itself. It fetches the inputs in terms of *files to test*
 and the expected outputs for every test from the Excel sheet TestDefinitions.xlsx located in this directory.
 To add a test case, you have to add a file to this sheet by adding a line containing the filename, the schema's expected depth, the schema's expected
 resolved depth, the schema's expected has_recursions property, the schema's string count, the schema's maximum fan-in and the schema's reachability property.
-Additionaly the test file has to be located in the subdirectory TestSchemas. 
+Additionaly the test file has to be located in the subdirectory `TestSchemas`.
 
 ## Test coverage