Reformat README

Author: singingwolfboy

README.md

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+# RoboHash
+
+The source code for [RoboHash.org](https://robohash.org/).
+
+It basically copy/pastes various robot pictures together, using bits from
+the SHA hash. It's not perfect, and not entirely secure, but it gives
+a good gut-check to "Hey, this SHA is wrong."
+
+## Install
+
+Just the library:
+
+```bash
+$ pip install robohash
+```
+
+Or if you also want the web frontend:
+
+```bash
+$ pip install robohash[web]
+```
+
+## Usage
+
+```python
+from robohash import Robohash
+
+hash = "whatever-hash-you-want"
+rh = Robohash(hash)
+rh.assemble(roboset='any')
+with open("path/to/new/file.png", "w") as f:
+    rh.img.save(f, format="png")
+```
+
+## Robosets
+
+RoboHash comes with three image sets, named "set1", "set2", and "set3". Specify
+which set you want in the `assemble()` method. Alternatively, specify the string
+"any", and RoboHash will pick an image set for you, based on the provided hash.
+
+The "set1" artwork was created by Zikri Kader. The "set2" artwork was created by
+Hrvoje Novakovic. The "set3" artwork was created by Julian Peter Arias.
+
+## License
+
+The Python Code is available under the MIT/Expat license. See the `LICENSE.txt`
+file for the full text of this license. Copyright (c) 2011, Colin Davis.
+
+The RoboHash images are available under the CC-BY-3.0 license.
+
+## Disclaimer
+
+OK, I'll admit I'm a crappy programmer. Compounding this, I wrote this code
+initially to be internal-only. It's ugly, and could be a LOT nicer.
+
+Sorry about that.