add CLA for initOS

doc/cla/corporate/initos.md

+Germany, 2015-02-26
+
+initOS GmbH & Co. KG agrees to the terms of the Odoo Corporate 
+Contributor License Agreement v1.0.
+
+I declare that I am authorized and able to make this agreement and sign this 
+declaration.
+
+Signed,
+
+Markus Schneider markus.schneider@initos.com https://github.com/OSguard
+
+List of contributors:
+
+Markus Schneider markus.schneider@initos.com https://github.com/OSguard
+Thomas Rehn thomas.rehn@initos.com https://github.com/tremlin
+Katja Matthes katja.matthes@initos.com https://github.com/kmatthes
+Frederik Kramer frederik.kramer@initos.com https://github.com/OSevangelist
+Nikolina Todorova nikolina.todorova@initos.com https://github.com/ntodorova
+Peter Hahn peter.hahn@initos.com https://github.com/codingforfun
+Claudia Haida claudia.haida@initos.com