add readme, license, docs index

LICENSE.md

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+# The MIT License (MIT)
+
+The MIT License (MIT)
+
+Copyright (c) 2021 Sean Sube
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Textual Engine
+
+This is a text adventure engine.
+
+See [the getting started docs](docs/getting-started.md) for more info.
+
+## Features
+
+- text
+- adventure
+- world:
+  - persistent rooms
+  - wandering monsters
+- engine:
+  - event broadcast
+  - entity scripts
+
+## Contents
+
+- [Textual Engine](#textual-engine)
+  - [Features](#features)
+  - [Contents](#contents)
+  - [Building](#building)
+  - [Running](#running)
+  - [Docs](#docs)
+  - [License](#license)
+
+## Building
+
+Some `make` targets are provided:
+
+- `make build`: transpile Typescript sources
+- `make test`: build and run `mocha` tests
+- `make cover`: run `make test` with `nyc` code coverage
+
+## Running
+
+Some `make` targets are provided:
+
+- `make run`: run with test world
+
+## Docs
+
+More detailed docs [are located in `./docs`](docs/).
+
+Available documentation includes:
+
+- [Engine Architecture](docs/architecture.md)
+- [Development Workflow](docs/development.md)
+- [Getting Started](docs/getting-started.md)
+- [Creating Worlds](docs/worlds.md)
+
+## License
+
+This project uses [the MIT license](LICENSE.md).

docs/README.md

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+# Docs
+
+Available documentation includes:
+
+- [Engine Architecture](architecture.md)
+- [Development Workflow](development.md)
+- [Getting Started](getting-started.md)
+- [Creating Worlds](worlds.md)