Add essay proposal

contributions/essay/phisal/README.md

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+# Assignment Proposal
+
+## Title
+
+A comparitive study of IaC tools - Terraform, Pulumi, Google Cloud Deployment Manager and AWS CloudFormation
+
+## Names and KTH ID
+
+ - Philip Salqvist ([email protected])
+
+## Deadline
+
+Task 3
+
+## Category
+
+Essay
+
+## Description
+
+During the rise of IaC, a number of tools and platforms have been established. However, these tools are quite heterogeneous by differing in a nuumber of important ways.
+Investigating the main differences by a comparitive study of these tools could be of great benifit when making a long term choice in investing in a perticular IaC technology.
+This study will do precisely that by investigating four different tools, which are divided into two open source and two closed source alternatives, namely Terraform and Pulumi
+as well as Google Cloud Deployment Manager and AWS CloudFormation.