Add lint-staged

package.json

@@ -24,16 +24,24 @@
     "babel-preset-stage-0":              "6.5.0",
     "postcss-parser-tests":              "5.0.10",
     "babel-eslint":                      "6.1.2",
+    "lint-staged":                       "2.0.3",
+    "pre-commit":                        "1.1.3",
     "babel-core":                        "6.14.0",
     "babel-cli":                         "6.14.0",
     "eslint":                            "3.4.0",
     "ava":                               "0.16.0"
   },
   "scripts": {
-    "prepublish": "npm run build",
-    "clean":      "rm *.js || echo 'Already cleaned'",
-    "build":      "npm run clean && babel -s inline -d ./ *.es6",
-    "lint":       "eslint *.es6 test/*.js",
-    "test":       "npm run build && ava && npm run lint"
-  }
+    "lint-staged": "lint-staged",
+    "prepublish":  "npm run build",
+    "clean":       "rm *.js || echo 'Already cleaned'",
+    "build":       "npm run clean && babel -s inline -d ./ *.es6",
+    "lint":        "eslint *.es6 test/*.js",
+    "test":        "npm run build && ava && npm run lint"
+  },
+  "lint-staged": {
+    "test/*.js": "eslint",
+    "*.es6": "eslint"
+  },
+  "pre-commit": ["lint-staged"]
 }