edits: reverted changes and readded contributing file in docs repo

docs/CONTRIBUTING.md

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+# Documentation Setup
+
+## Prerequisites
+
+Make sure that you have pipenv installed on your system:
+
+    pip3 install pipenv
+
+Once installed navigate to this folder in the project
+
+    cd fetchd/docs
+
+Make sure all the dependencies are installed
+
+    pipenv install -d
+
+## Updating the docs
+
+Once the dependencies are setup you must activate the environment with the following commands
+
+    pipenv shell
+
+This step should update your terminal prompt and you will be able to see that the command `mkdocs` is installed in your path
+
+    which mkdocs
+
+Finally, to start the development server run the following command
+
+    mkdocs serve
+
+This will listen for changes on the filesystem and automatically update the documentation.