Merge pull request #39 from dienkwik/pr1

Grammar Fix -> "was been" to "had been"

README.md

@@ -19,7 +19,7 @@ HolacracyOne is not a law firm. The information contained herein is documentatio
 Like Linux®, Wikipedia®, and Java®, Holacracy® is a registered trademark; in this case, of HolacracyOne LLC. And like other stewards of open platforms, HolacracyOne aims to maintain the integrity of its brand and the quality of what it represents. So, we invite you to make and share your own derivative works of the Holacracy® Constitution, per the terms of our open-source CC BY-SA 4.0 license, and to reference that your work is derived from the official Holacracy Constitution - please include a link to http://holacracy.org/constitution. However, beyond that reference, you may not name or otherwise brand your derivative work using the Holacracy mark, to avoid confusion between your version and the official Holacracy document. If you have any questions, please <a href="http://www.holacracy.org/contact/" target="_blank">contact HolacracyOne</a>!
 
 ### Contributors
-Up to version 4.0, the Holacracy Constitution was been developed by Brian Robertson and HolacracyOne. 
+Up to version 4.0, the Holacracy Constitution had been developed by Brian Robertson and HolacracyOne. 
 
 Contributors to the current version are Brian Robertson, Rashid Gilanpour, Alexia Bowers, djwork, Martin Röll, Olivier Compagne, Koen Veltman, Mieke Byerley, Diederick Janse, Karilen Mays, Bernard Marie Chiquet and Tim Kelley.