Add pre-commit to run vint

.gitignore

@@ -12,3 +12,4 @@ vim/tmp/
 vim/tmp/viminfo.*
 .DS_Store
 vim/view/
+.pre_commit_env/

.pre-commit-config.yaml

@@ -0,0 +1,12 @@
+---
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v1.2.3
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+  # After merging, this should change to the upstream and point to master
+  - repo: https://github.com/ViViDboarder/vint
+    rev: pre-commit-support
+    hooks:
+      - id: vint

Makefile

@@ -1,3 +1,6 @@
+PRE_COMMIT_ENV ?= .pre_commit_env
+PRE_COMMIT_ENV_BIN ?= $(PRE_COMMIT_ENV)/bin
+
 .PHONY: default
 default: install
 
@@ -21,3 +24,19 @@ uninstall:
 clean:
 	rm -fr ./vim/plugged
 	rm -fr ./vim/autoload/plug.vim
+
+# Installs pre-commit hooks
+$(PRE_COMMIT_ENV):
+	virtualenv $(PRE_COMMIT_ENV)
+
+$(PRE_COMMIT_ENV_BIN)/pre-commit: $(PRE_COMMIT_ENV)
+	$(PRE_COMMIT_ENV_BIN)/pip install pre-commit
+
+.PHONY: install-hooks
+install-hooks: $(PRE_COMMIT_ENV_BIN)/pre-commit
+	$(PRE_COMMIT_ENV_BIN)/pre-commit install-hooks
+
+# Checks files for encryption
+.PHONY: check
+check: $(PRE_COMMIT_ENV_BIN)/pre-commit
+	$(PRE_COMMIT_ENV_BIN)/pre-commit run --all-files