[FE training-materials-updates] Document compiling issue

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=ffeb180e1b5885c445c96a24ef16dee7bd471679

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commit ffeb180e1b5885c445c96a24ef16dee7bd471679
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Thu Apr 27 15:09:59 2017 +0200

    Document compiling issue
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


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ffeb180e1b5885c445c96a24ef16dee7bd471679
 README | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/README b/README
index c3af844..b519c5f 100644
--- a/README
+++ b/README
@@ -13,8 +13,17 @@ Then, run 'make help' to see what available targets are.
 
 For example:
 
-make full-android-slides.pdf
-make full-android-labs.pdf
+make full-kernel-slides.pdf
+make full-kernel-labs.pdf
+
+Compiling issues
+================
+
+ * If the materials stop compiling after upgrading your distro,
+   you may have to run "make clean" to get the materials to
+   compile again.
+
+   Example case: https://tex.stackexchange.com/questions/352017/miktex-and-beamer-error-beamerendinputifotherversion
 
 Labs formatting guidelines
 ==========================