Добавил функциональность линтинга стилей

package.json

@@ -3,9 +3,10 @@
   "version": "1.0.0",
   "description": "Start a library of blocks and technical solutions for HTML/CSS/js page layout.",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "node_modules/.bin/stylelint ./src/**/*.less",
     "start": "./node_modules/.bin/gulp",
-    "deploy": "cross-env NODE_ENV=production ./node_modules/.bin/gulp build && cross-env ./node_modules/.bin/gulp deploy"
+    "deploy": "cross-env NODE_ENV=production ./node_modules/.bin/gulp build && cross-env ./node_modules/.bin/gulp deploy",
+    "precommit": "npm test"
   },
   "author": "Nikolay Gromov",
   "license": "MIT",
@@ -28,7 +29,7 @@
     "gulp-gh-pages": "^0.5.4",
     "gulp-if": "^2.0.0",
     "gulp-imagemin": "^2.4.0",
-    "gulp-less": "^3.0.5",
+    "gulp-less": "^3.1.0",
     "gulp-newer": "^1.1.0",
     "gulp-notify": "^2.2.0",
     "gulp-postcss": "^6.1.0",
@@ -40,7 +41,9 @@
     "gulp-svgstore": "^5.0.5",
     "gulp-uglify": "^1.5.2",
     "imagemin-pngquant": "^4.2.0",
-    "mkdirp": "^0.5.1"
+    "mkdirp": "^0.5.1",
+    "stylelint": "^7.1.0",
+    "stylelint-declaration-use-variable": "^1.5.0"
   },
   "config": {
     "ghPages": "http://nicothin.github.io/NTH-start-project/blocks_library.html",