diff --git a/.gitattributes b/.gitattributes
index 6a2662b..df7f7c5 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,5 @@
 *.doc filter=lfs diff=lfs merge=lfs -text
 *.bmp filter=lfs diff=lfs merge=lfs -text
 *.odt filter=lfs diff=lfs merge=lfs -text
+presentation/main.pdf filter=lfs diff=lfs merge=lfs -text
+presentation/main.pptx filter=lfs diff=lfs merge=lfs -text
diff --git a/presentation/main.pdf b/presentation/main.pdf
new file mode 100644
index 0000000..236076c
--- /dev/null
+++ b/presentation/main.pdf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 39816
diff --git a/presentation/main.pptx b/presentation/main.pptx
new file mode 100644
index 0000000..d74592d
--- /dev/null
+++ b/presentation/main.pptx
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8d193d4a0568386bb9e30f1dcc17ed450b6cbc042a9b292d2280c6fecc187db9
+size 430192