docs: Added docs readme

Author: robdmoore

docs/README.md

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+# AlgoKit TypeScript Utilities
+
+A set of core Algorand utilities written in TypeScript and released via npm that make it easier to build solutions on Algorand. This project is part of [AlgoKit](https://github.com/algorandfoundation/algokit-cli).
+
+The goal of this library is to provide intuitive, productive utility functions that make it easier, quicker and safer to build applications on Algorand. Largely these functions wrap the underlying Algorand SDK, but provide a higher level interface with sensible defaults and capabilities for common tasks.
+
+Note: If you prefer Python there's an equivalent [Python utility library](https://github.com/algorandfoundation/algokit-utils-py).
+
+# Install documentation
+
+This library can be installed from NPM using your favourite npm client, e.g.:
+
+```
+npm install @algorandfoundation/algokit-utils
+```
+
+# Code documentation
+
+We have [auto-generated documentation for the code](code/README.md).