use flat badges

Author: illagrenan

README.rst

@@ -3,19 +3,19 @@
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 +----------------+-----------------------------------------------------------------------------------------------------------------+
-| Latest release | .. image:: https://img.shields.io/pypi/v/tensorflow-serving-api-python3.svg                                     |
+| Latest release | .. image:: https://img.shields.io/pypi/v/tensorflow-serving-api-python3.svg?style=flat-square                                     |
 |                |    :target: https://pypi.python.org/pypi/tensorflow-serving-api-python3                                         |
 |                |    :alt: PyPi                                                                                                   |
 |                |                                                                                                                 |
-|                | .. image:: https://img.shields.io/pypi/implementation/tensorflow-serving-api-python3.svg                        |
+|                | .. image:: https://img.shields.io/pypi/implementation/tensorflow-serving-api-python3.svg?style=flat-square                        |
 |                |    :target: https://pypi.python.org/pypi/tensorflow-serving-api-python3/                                        |
 |                |    :alt: Supported Python implementations                                                                       |
 |                |                                                                                                                 |
-|                | .. image:: https://img.shields.io/pypi/pyversions/tensorflow-serving-api-python3.svg                            |
+|                | .. image:: https://img.shields.io/pypi/pyversions/tensorflow-serving-api-python3.svg?style=flat-square                            |
 |                |    :target: https://pypi.python.org/pypi/tensorflow-serving-api-python3/                                        |
 |                |    :alt: Supported Python versions                                                                              |
 +----------------+-----------------------------------------------------------------------------------------------------------------+
-| CI             | .. image:: https://img.shields.io/travis/illagrenan/tensorflow-serving-api-python3.svg                          |
+| CI             | .. image:: https://img.shields.io/travis/illagrenan/tensorflow-serving-api-python3.svg?logo=travis&style=flat-square                          |
 |                |    :target: https://travis-ci.org/illagrenan/tensorflow-serving-api-python3                                     |
 |                |    :alt: TravisCI                                                                                               |
 +----------------+-----------------------------------------------------------------------------------------------------------------+