complete chill documentation about csfixer and phpstan

docs/source/installation/index.rst

@@ -265,7 +265,7 @@ Tests reside inside the installed bundles. You must `cd` into that directory, do
 
 **Note**: some bundle require the fixture to be executed. See the dedicated _how-tos_.
 
-Exemple, for running test inside `main` bundle:
+Exemple, for running unit test inside `main` bundle:
 
 .. code-block:: bash
 
@@ -280,6 +280,30 @@ Exemple, for running test inside `main` bundle:
    # run tests
    bin/phpunit src/Bundle/path/to/your/test
 
+Or for running tests to check code style and php conventions with csfixer and phpstan:
+
+.. code-block:: bash
+
+    # run code style fixer
+    bin/grumphp run --tasks=phpcsfixer
+    # run phpstan
+    bin/grumphp run --tasks=phpstan
+
+
+.. note::
+
+    To avoid phpstan block your commits:
+
+    .. code-block:: bash
+
+        git commit -n ...
+
+    To avoid phpstan block your commits permanently:
+
+    .. code-block:: bash
+
+        ./bin/grumphp git:deinit
+
 How to run webpack interactively
 ================================