Use git-lfs to store the generated pdf

pirms 4 gadiem · 45c5747e9e
--- a/.gitattributes
+++ b/.gitattributes
@@ -0,0 +1 @@
 *.pdf filter=lfs diff=lfs merge=lfs -text
--- a/cours.pdf
+++ b/cours.pdf
 oid sha256:968c85ddb596a9e348a1a5a420739c0c4d5723024aacae52a019a55eb3635cc3
 size 259681