[presentation-templates] README: Update purpose

[Lasse Schuirmann <lschuirma src gnome org>]

commit d42ecf690da523162826b88c264f72fc6a01b1dc
Author: Lasse Schuirmann <lasse schuirmann gmail com>
Date:   Wed Jan 27 18:53:11 2016 +0100

    README: Update purpose
    
    This repository is now more general.

 README.md |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
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diff --git a/README.md b/README.md
index 4ac3ecb..8928b5c 100644
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 # Purpose
 
-This repository provides templates to ease presentation creation for the yearly
-GUADEC. (See http://guadec.org/)
+This repository provides templates to ease presentation creation for
+presentations at GNOME events or about GNOME.
 
 # Authors
 
-The templates in this repository are brought to you by Adrien Plazas and Lasse
-Schuirmann. Artwork is taken from http://guadec.org created by Andreas Nilsson,
-Jakub Steiner and others.
+The templates in this repository are brought to you by some people. The artwork
+is taken from http://guadec.org created by Andreas Nilsson, Jakub Steiner and
+others.