Tuleap 69 add an open source license

I added the license info in a license folder and in the Readme.

You can merge with closed eyes.

README.md

- MemoRekallMember web app 
-This project has been created to help artists document their creative process with video notes and documents.
+# MemoRekall Member Web App 
+
+An online video annotation app.
+
+This project has been created to help artists documenting their creative process with video notes and documents.
+
+## License
+
+This project is distributed under the CeCILL-B Open Source License :
+
+http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.html
+
+http://www.cecill.info/licences/Licence_CeCILL_V2.1-fr.html
+
+The licence in french and english are included in the Git repo under the `license` folder.
 
 ## Installation