ENH: Moving from README.md to README.rst

Author: jbvimort

README.md

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+Welcome to ITKPythonPackage's documentation!
+============================================
+
+This project provides a ``setup.py`` script that build ITK Python wheels.
+
+ITK is an open-source, cross-platform system that provides developers with an extensive suite of software tools for image analysis.
+
+The Python packages are built daily. To install the ITK Python package::
+
+	$ python -m pip install --upgrade pip
+	$ python -m pip install itk -f https://github.com/InsightSoftwareConsortium/ITKPythonPackage/releases/tag/latest
+
+For more information on ITK's Python wrapping, see an introduction in the ITK Software Guide. There are also many downloadable examples documented in Sphinx.
+
+* Free software: Apache Software license
+* Documentation: http://itkpythonpackage.readthedocs.org
+* Source code: https://github.com/InsightSoftwareConsortium/ITKPythonPackage