Fixed coverage defaults + proper formatting for code lines in RST + new lockfile

Author: robinharms

.gitignore

@@ -11,3 +11,5 @@ __pycache__
 *.wpr
 *.wpu
 .venv
+.coverage
+venv/

README.rst

@@ -15,21 +15,36 @@ INSTALLING
 
 To install the core module, run:
 
+.. code-block::
+
 	pip install python-graph
 
 To install the dot language support, run:
 
+.. code-block::
+
 	pip install python-graph[dot]
 
-If you want the development version, use poetry
+If you want the development version, use poetry. This will also install pytest and pydot.
+
+.. code-block::
 
 	pip install poetry
 	poetry install --with dev
 
-And to run tests
+And to run tests:
+
+.. code-block::
 
 	pytest
 
+Coverage has some defaults set so simply run:
+
+.. code-block::
+
+	coverage run
+	coverage report
+
 
 DOCUMENTATION
 -------------