Increased latest version to 2.0.1b0 [skip ci]

README.rst

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-   :target: https://www.idiap.ch/software/bob/docs/bob/bob.devtools/v2.0.0/index.html
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-   :target: https://gitlab.idiap.ch/bob/bob.devtools/commits/v2.0.0
+.. image:: https://gitlab.idiap.ch/bob/bob.devtools/badges/master/build.svg
+   :target: https://gitlab.idiap.ch/bob/bob.devtools/commits/master
+.. image:: https://gitlab.idiap.ch/bob/bob.devtools/badges/master/coverage.svg
+   :target: https://gitlab.idiap.ch/bob/bob.devtools/commits/master
 .. image:: https://img.shields.io/badge/gitlab-project-0000c0.svg
    :target: https://gitlab.idiap.ch/bob/bob.devtools
 .. image:: https://img.shields.io/pypi/v/bob.devtools.svg

version.txt

-2.0.0
+2.0.1b0
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