Add .pre-commit-hooks.yaml (#123)

See usage example at #123 (comment).

Author: Freed-Wu

.pre-commit-hooks.yaml

@@ -0,0 +1,11 @@
+---
+- id: vimdoc
+  name: vimdoc
+  description: "Helpfile generation for vim"
+  entry: vimdoc
+  language: python
+  pass_filenames: false
+  types:
+    - vim
+  args:
+    - .