adding readme / contributing

.gitignore

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+node_modules
+
+static/build
+
+*.pyc
+
+.DS_Store

CONTRIBUTING.md

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+Want to contribute? Great! First, read this page (including the small print at the end).
+
+### Before you contribute
+Before we can use your code, you must sign the
+[Google Individual Contributor License Agreement]
+(https://cla.developers.google.com/about/google-individual)
+(CLA), which you can do online. The CLA is necessary mainly because you own the
+copyright to your changes, even after your contribution becomes part of our
+codebase, so we need your permission to use and distribute your code. We also
+need to be sure of various other things—for instance that you'll tell us if you
+know that your code infringes on other people's patents. You don't have to sign
+the CLA until after you've submitted your code for review and a member has
+approved it, but you must do it before we can put your code into our codebase.
+Before you start working on a larger contribution, you should get in touch with
+us first through the issue tracker with your idea so that we can help out and
+possibly guide you. Coordinating up front makes it much easier to avoid
+frustration later on.
+
+### Code reviews
+All submissions, including submissions by project members, require review. We
+use Github pull requests for this purpose.
+
+### The small print
+Contributions made by corporations are covered by a different agreement than
+the one above, the
+[Software Grant and Corporate Contributor License Agreement]
+(https://cla.developers.google.com/about/google-corporate).

README.md

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+A.I. Duet is composed of two parts, the front-end which is in the 'static' folder and the back-end which is in the 'server' folder. The front-end client creates short midi files using the user's input which is sent to the server. The server takes that midi input and continues it using [Magenta](https://github.com/tensorflow/magenta) which is then returned back to the client. 
+
+This is not an official Google product.
+
+## FRONT END
+
+To build the client-side javascript, first install [node](https://nodejs.org) and [webpack](https://webpack.github.io/). Then you can install of the dependencies of the project by typing the following in the terminal: 
+
+```bash
+cd static
+npm install
+```
+
+Then build all of the files
+
+```bash
+webpack -p
+```
+
+### BACK END
+
+The back-end consists of a [Flask](http://flask.pocoo.org/) server, [TensorFlow](https://www.tensorflow.org/) and [Magenta](https://github.com/tensorflow/magenta). 
+
+First install [TensorFlow](https://www.tensorflow.org/versions/master/get_started/os_setup.html). 
+
+To install the rest of the back-end requirements (make sure you have python and [pip](https://pip.pypa.io/en/stable/installing/) installed):
+
+```bash
+cd server
+pip install -r requirements.txt
+```
+
+Then run the server:
+
+```bash
+python server.py
+```
+
+You can now play with A.I. Duet at [localhost:8080](http://localhost:8080).
+
+## MIDI SUPPORT
+
+The A.I. Duet supports MIDI keyboard input using [Web Midi API](https://webaudio.github.io/web-midi-api/) and the [WebMIDI](https://github.com/cotejp/webmidi) library. Make sure you refresh the page after plugging in a keyboard to make sure it connects correctly. 
+
+## PIANO KEYBOARD
+
+The piano can also be controlled from your computer keyboard thanks to [Audiokeys](https://github.com/kylestetz/AudioKeys). The center row of the keyboard is the white keys.
+
+## PIANO AUDIO
+
+Multisampled piano from [Salamander Grand Piano V3](https://archive.org/details/SalamanderGrandPianoV3) by Alexander Holm ([Creative Commons Attribution 3.0](https://creativecommons.org/licenses/by/3.0/)).
+
+## LICENSE
+
+Copyright 2016 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.