pybamm-team#99 minor changes to infrastructure files

CONTRIBUTING.md

@@ -194,7 +194,7 @@ $ python run-tests.py --books
 If notebooks fail because of changes to pybamm, it can be a bit of a hassle to debug. In these cases, you can create a temporary export of a notebook's Python content using
 
 ```
-$ python run-tests.py --debook examples/notebook-name.ipynb script.py
+$ python run-tests.py --debook examples/notebooks/notebook-name.ipynb script.py
 ```
 
 
@@ -225,9 +225,9 @@ Next, open a browser, and navigate to your local PyBaMM directory (by typing the
 
 ### Example notebooks
 
-Major PyBaMM features are showcased in [Jupyter notebooks](https://jupyter.org/) stored in the [examples directory](examples). Which features are "major" is of course wholly subjective, so please discuss on GitHub first!
+Major PyBaMM features are showcased in [Jupyter notebooks](https://jupyter.org/) stored in the [examples directory](examples/notebooks). Which features are "major" is of course wholly subjective, so please discuss on GitHub first!
 
-All example notebooks should be listed in [examples/README.md](https://github.com/tinosulzer/pybamm/examples/README.md). Please follow the (naming and writing) style of existing notebooks where possible.
+All example notebooks should be listed in [examples/README.md](https://github.com/tinosulzer/pybamm/examples/notebooks/README.md). Please follow the (naming and writing) style of existing notebooks where possible.
 
 Where possible, notebooks are tested daily. A list of slow notebooks (which time-out and fail tests) is maintained in `.slow-books`, these notebooks will be excluded from daily testing.
 

run-tests.py

@@ -277,6 +277,10 @@ def export_notebook(ipath, opath):
         help="Export a Jupyter notebook to a Python file for manual testing.",
     )
     # Doctests
+    parser.add_argument(
+        "--flake8", action="store_true", help="Run flake8 to check for style issues"
+    )
+    # Doctests
     parser.add_argument(
         "--doctest",
         action="store_true",
@@ -308,6 +312,10 @@ def export_notebook(ipath, opath):
     if args.nosub:
         has_run = True
         run_unit_tests()
+    # Flake8
+    if args.flake8:
+        has_run = True
+        run_flake8()
     # Doctests
     if args.doctest:
         has_run = True