DOC: Fix cut passages from README in documentation index file

Fix cut passages from `README` in documentation index file: remove the
`start-line` and `end-line` directives and include the `README` file
entirely.

The `start-line` and `end-line` directives were making such that
relevant passages of the `README` file providing context for the
tool were not being included. Thus the text shown in the documentation
index file had some missing parts, and was not making sense.

Do not include the `eddymotion-flowchart.svg` figure: it is already
contained in the `README` file.

docs/index.rst

@@ -1,12 +1,5 @@
 .. include:: links.rst
 .. include:: ../README.rst
-   :end-line: 29
-.. include:: ../README.rst
-   :start-line: 34
-
-
-.. image:: _static/eddymotion-flowchart.svg
-   :alt: The eddymotion flowchart
 
 Contents
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