add readme

Author: wulfmann

.gitignore

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+.vscode
+.DS_Store
+.coverage

README.md

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+# AWS coco
+
+This tool allows you to manage AWS Console Sessions with Firefox Containers
+
+## Requirements
+
+- [Firefox](https://www.mozilla.org/en-US/firefox/new/)
+- [Open URL in Container Extension](https://addons.mozilla.org/en-US/firefox/addon/open-url-in-container/)
+- [Python >= 3.7](http://python.org/)
+
+If you don't wish to install the extension through the marketplace, the source for the extension can be found [here](https://github.com/honsiorovskyi/open-url-in-container).