diff --git a/doc/.gitkeep b/doc/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/model/.gitkeep b/model/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/other/.gitkeep b/other/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/.gitkeep b/src/.gitkeep
new file mode 100644
index 0000000..e69de29