Merge pull request #153 from brettcannon/update-contributing-guide

Update contributing guide to work on first go

.gitignore

@@ -6,9 +6,10 @@
 .cache/
 .coverage
 .idea
+.venv
 
 __pycache__/
 _build/
 build/
 dist/
-htmlcov/
+htmlcov/

dev-requirements.txt

@@ -1,4 +1,6 @@
 # Install our development requirements
+pretend
+pytest
 tox
 
 # Install packaging itself

docs/development/getting-started.rst

@@ -9,8 +9,8 @@ dependencies, install packaging in ``editable`` mode. For example:
 .. code-block:: console
 
     $ # Create a virtualenv and activate it
-    $ pip install --requirement dev-requirements.txt
-    $ pip install --editable .
+    $ python -m pip install --requirement dev-requirements.txt
+    $ python -m pip install --editable .
 
 You are now ready to run the tests and build the documentation.
 
@@ -23,7 +23,7 @@ automatically, so all you have to do is:
 
 .. code-block:: console
 
-    $ py.test
+    $ python -m pytest
     ...
     62746 passed in 220.43 seconds
 
@@ -73,4 +73,4 @@ The HTML documentation index can now be found at
 .. _`virtualenv`: https://pypi.org/project/virtualenv/
 .. _`pip`: https://pypi.org/project/pip/
 .. _`sphinx`: https://pypi.org/project/Sphinx/
-.. _`reStructured Text`: http://sphinx-doc.org/rest.html
+.. _`reStructured Text`: http://sphinx-doc.org/rest.html