[doc] rewrite description, add built with and documentation sections to python/README.md

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-Python aubio module
-===================
-
-This module wraps the aubio library for Python using the numpy module.
+aubio
+=====
+
+aubio is a collection of tools for music and audio analysis.
+
+This package integrates the aubio library with [NumPy] to provide a set of
+efficient tools to process and analyse audio signals, including:
+
+- read audio from any media file, including videos and remote streams
+- high quality phase vocoder, spectral filterbanks, and linear filters
+- Mel-Frequency Cepstrum Coefficients and standard spectral descriptors
+- detection of note attacks (onset)
+- pitch tracking (fundamental frequency estimation)
+- beat detection and tempo tracking
+
+aubio works with both Python 2 and Python 3.
+
+Built with
+----------
+
+The core of aubio is written in C for portability and speed. In addition to
+[NumPy], aubio can be optionally built to use one or more of the following
+libraries:
+
+- media file reading:
+
+    - [ffmpeg](https://ffmpeg.org) / [avcodec](https://libav.org) to decode and
+      read audio from almost any format,
+    - [libsndfile](http://www.mega-nerd.com/libsndfile/) to read audio from
+      uncompressed sound files,
+    - [libsamplerate](http://www.mega-nerd.com/SRC/) to re-sample audio signals
+    - [CoreAudio](https://developer.apple.com/reference/coreaudio) to read all
+      media files supported natively on macOS, iOS, and tvOS.
+
+- hardware acceleration:
+
+    - [Atlas](http://math-atlas.sourceforge.net/) and
+      [Blas](https://en.wikipedia.org/wiki/Basic_Linear_Algebra_Subprograms),
+      for accelerated vector and matrix computations,
+    - [fftw3](http://fftw.org), to compute fast Fourier Transforms of any size.
+    - [Accelerate](https://developer.apple.com/reference/accelerate) for
+      hardware accelerated FFT and matrix computations on macOs and iOS,
+    - [Intel IPP](https://software.intel.com/en-us/intel-ipp), accelerated
+      vector computation and FFT implementation,
+
+Documentation
+-------------
+
+- [module documentation][doc_python]
+- [installation][doc_python_install]
+- [aubio manual][manual]
+- [aubio homepage][homepage]
+
+[manual]: https://aubio.org/manual/latest/
+[doc_python]: https://aubio.org/manual/latest/python.html
+[doc_python_install]: https://aubio.org/manual/latest/python_module.html
+[homepage]: https://aubio.org
+[NumPy]: https://www.numpy.org

 
 Finding some inspiration
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 Finding some inspiration
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