--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/LICENSE.ZPL	Wed May 07 10:36:24 2014 +0200
@@ -0,0 +1,44 @@
+Zope Public License (ZPL) Version 2.1
+
+A copyright notice accompanies this license document that identifies the
+copyright holders.
+
+This license has been certified as open source. It has also been designated as
+GPL compatible by the Free Software Foundation (FSF).
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    1. Redistributions in source code must retain the accompanying copyright 
+       notice, this list of conditions, and the following disclaimer. 
+
+    2. Redistributions in binary form must reproduce the accompanying 
+       copyright notice, this list of conditions, and the following 
+       disclaimer in the documentation and/or other materials provided with 
+       the distribution.
+
+    3. Names of the copyright holders must not be used to endorse or promote
+       products derived from this software without prior written permission 
+       from the copyright holders.
+
+    4. The right to distribute this software or to use it for any purpose does 
+       not give you the right to use Servicemarks (sm) or Trademarks (tm) of the 
+       copyright holders. Use of them is covered by separate agreement with the 
+       copyright holders.
+
+    5. If any files are modified, you must cause the modified files to carry
+       prominent notices stating that you changed the files and the date of any 
+       change.
+
+Disclaimer
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED
+OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+OF SUCH DAMAGE.