[FE training-materials-updates] Add font requirement

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=7b56b6c5f62494ca417fed601480f7568024fe50

>---------------------------------------------------------------

commit 7b56b6c5f62494ca417fed601480f7568024fe50
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Wed Sep 23 15:08:24 2015 +0200

    Add font requirement
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

7b56b6c5f62494ca417fed601480f7568024fe50
 README | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README b/README
index 15d4735..5b19a90 100644
--- a/README
+++ b/README
@@ -5,7 +5,8 @@ First, you may install the packages needed to compile the materials:
 
 sudo apt-get install git-core inkscape texlive-latex-base \
 texlive-latex-extra texlive-font-utils dia python-pygments \
-texlive-fonts-recommended make texlive-xetex fonts-inconsolata
+texlive-fonts-recommended make texlive-xetex fonts-inconsolata \
+fonts-liberation
 
 Then, run 'make help' to see what available targets are.