stage api key and add accounts to contributing.md

Author: cldougl

contributing.md

@@ -12,7 +12,7 @@ Open an issue! Go to https://github.com/plotly/plotly.py/issues. It's possible t
 
 ## Have Questions about Plotly?
 
-Check out our Support App: https://support.plot.ly/libraries/python or Community Forum: https://community.plot.ly/. 
+Check out our Support App: https://support.plot.ly/libraries/python or Community Forum: https://community.plot.ly/.
 
 ## Setup
 
@@ -194,6 +194,8 @@ You're *strongly* encouraged to write tests that check your added functionality.
 
 When you write a new test anywhere under the `tests` directory, if your PR gets accepted, that test will run in a virtual machine to ensure that future changes don't break your contributions!
 
+Test accounts include: `PythonTest`, `PlotlyImageTest`, and  `PlotlyStageTest`. 
+
 #### Publishing to Pip
 
 You'll need the credentials file `~/.pypirc`. Request access from @theengineear and @chriddyp. Then, from inside the repository:

plotly/tests/test_core/test_offline/test_offline.py

@@ -110,7 +110,7 @@ def setUp(self):
         super(PlotlyOfflineOtherDomainTestCase, self).setUp()
         plotly.tools.set_config_file(plotly_domain='https://stage.plot.ly',
                                      plotly_api_domain='https://api-stage.plot.ly')
-        plotly.plotly.sign_in('PlotlyStageTest', 'EhdkoFnID6W7bzbejuEK')
+        plotly.plotly.sign_in('PlotlyStageTest', 'rs3GA48WfFKUX4JpVL07')
 
     def test_plot_rendered_if_non_plotly_domain(self):
         html = plotly.offline.plot(fig, output_type='div')