Add first version of README.rst.

README.md

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-captcha_module
-
-Contrib module containing captcha logic.

README.rst

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+Simple captcha module
+=====================
+
+This module provides a simple captcha challenge (distorted characters).
+
+Installation
+------------
+
+- Make a new folder "captcha" in the **modules/oe/** directory of your shop installation. Download https://github.com/OXID-eSales/captcha_module/archive/master.zip and unpack it into this folder. **OR**
+- Git clone the module to your OXID eShop **modules/oe/** directory:
+
+  .. code:: bash
+
+     git clone https://github.com/OXID-eSales/captcha_module.git captcha
+- Activate the module in administration panel.
+
+Uninstallation
+--------------
+
+Disable the module in administration panel and/or delete the module folder.
+
+
+License
+-------
+
+Licensing of the software product depends on the shop edition used. The software for OXID eShop Community Edition
+is published under the GNU General Public License v3. You may distribute and/or modify this software according to
+the licensing terms published by the Free Software Foundation. Legal licensing terms regarding the distribution of
+software being subject to GNU GPL can be found under http://www.gnu.org/licenses/gpl.html. The software for OXID eShop
+Professional Edition and Enterprise Edition is released under commercial license. OXID eSales AG has the sole rights to
+the software. Decompiling the source code, unauthorized copying as well as distribution to third parties is not
+permitted. Infringement will be reported to the authorities and prosecuted without exception.