Add style-check script

.travis.yml

@@ -8,4 +8,4 @@ before_install:
   - sudo luarocks install luacheck
 
 script:
-  - luacheck **/**/*.lua --codes
+  - ./scripts/style-check.sh

CONTRIBUTING.md

@@ -11,6 +11,18 @@ As you know, `nvim-treesitter` is roughly splitted in two parts :
 
 Depending on which part of the plugin you want to contribute to, please read the appropriate section.
 
+## Style Checks and Tests
+
+We haven't implemented any functionality tests yet. Feel free to contribute.
+However, we check code style with `luacheck`!
+Please install luacheck and activate our `pre-push` hook to automatically check style before
+every push:
+
+```bash
+luarocks install luacheck
+ln -s ../../scripts/pre-push .git/hooks/pre-push
+```
+
 ## Parser configurations
 
 Contributing to parser configurations is basically modifying one of the `queries/*/*.scm`.

scripts/pre-push

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# Can be used as a pre-push hook
+# Just symlink this file to .git/hooks/pre-push
+
+echo "Running style check..."
+./scripts/style-check.sh

scripts/style-check.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+luacheck `find -name  "*.lua"` --codes