DOC: breakfast meeting on c++14

Slides/UsersMeeting17/introduction.org

@@ -77,7 +77,7 @@
    - Open question & features requests & one-to-one tutoring
    - Brainstorming 
 ** Day 3: Hackfest
-   - Keynote talks: C++11 for OTB?
+   - Breakfast meeting: C++11/14/17 for OTB?
    - Then 30 minutes planning meeting at the beginning
    - Write the code you need with the help of a member of the
      development team