move pytest to dev

Author: tobiasduerschmid

Pipfile

@@ -4,10 +4,10 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-pytest = "*"
 gitpython = "*"
 
 [dev-packages]
+pytest = "*"
 
 [requires]
 python_version = "3.13"

Pipfile.lock

@@ -22,5 +22,6 @@ The source code is in: `src/roman/int_to_roman.py`
 The test code is in: `tests/test_int_to_roman.py`
 
 After installing pytest (`pip install pytest`) you can run `pytest` to execute the tests. 
+Alternatively you can use pipenv (after install `pip install pipenv`) and run the testsvia (`pipenv run pytest`).
 
 Please follow the TDD Red-Green-Refactor steps. Iteratively add one test, then implement code passing the test, the refactor the code.