Feedback Proposal for #1018 (#1056)

* Create Essay Proposal

* Create Feedback Proposal for #1018

* Create Tutorial Proposal

* Delete README.md

* Revert "Delete README.md"

This reverts commit 247d8be.

contributions/executable-tutorial/axp-fseifert/README.md

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+# Tutorial: Serverless Applications on Heroku
+
+## Members
+
+Axel Pettersson (axp@kth.se)
+GitHub: [Ackuq](https://github.com/Ackuq)
+
+Felix Seifert (fseifert@kth.se)
+Github: [felix-seifert](https://github.com/felix-seifert)
+
+## Proposal
+
+Heroku is a webservice where users can run simple web applications for free for a limited number of hours per month. The obvious approach is to run serverless applications which are billed per second. However, Heroku does not offer the option to deploy serverless applications of-the-shelf. 
+
+We found a way on how to use Heroku's One-off Dynos, which are not addressable via HTTP requests, to process Functions-as-a-Service via providing arguments via environment variables. This approach is mentioned on the web only a single time. We want to create a tutorial on how to use Heroku to deploy a serverless application. As this tutorial is not executable simply via the browser and requires interactions with Heroku and GitHub, we do not want to use a platform for online tutorials and suggest to create a GitHub repo which contains source code examples and detailed descriptions on how to achieve the serverless deployment.

contributions/feedback/fseifert/README.md

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+# Feedback 
+## *SaaS, PaaS, IaaS? A taxonomy of cloud service models*
+
+### Members
+Felix Seifert (fseifert@kth.se)
+GitHub: [felix-seifert](https://github.com/felix-seifert)
+
+### Proposal
+
+After scanning many essay proposals, I found #1018. The topic sounds interesting for a wide range of people, also non-developers. I want to provide feedback for this essay to help the authors to ensure that this essay is perceived well by many readers.