Merge pull request #12 from aidanlister/patch-1

Add information about getting the demos up and running on Heroku

Author: pitbulk

README.md

@@ -1035,3 +1035,24 @@ Once the SP is configured, the metadata of the SP is published at the /metadata
 ####How it works####
 
 This demo works very similar to the flask-demo (We did it intentionally).
+
+###Getting up and running on Heroku###
+
+Getting python3-saml up and running on Heroku will require some extra legwork: python3-saml depends on python-xmlsec which depends on headers from the xmlsec1-dev linux package to install correctly. 
+
+First you will need to add the ```apt``` buildpack to your build server:
+
+```
+heroku buildpacks:set --index=1 -a your-app https://github.com/ABASystems/heroku-buildpack-apt
+heroku buildpacks:set --index=2 -a your-app https://github.com/ABASystems/heroku-buildpack-python
+```
+
+You can confirm the buildpacks have been added in the correct order with ```heroku buildpacks -a your-app```, you should see the apt buildpack first followed by the python buildpack.
+
+Then add an ```Aptfile``` into the root of your repository containing the ```libxmlsec1-dev``` package, the file should look like:
+```
+libxmlsec1-dev
+
+```
+
+Finally, add python3-saml to your requrements.txt and ```git push``` to trigger a build.