feat(gulp): add LESS

Author: Awk34

app/templates/_package.json

@@ -47,7 +47,8 @@
     "gulp-imagemin": "^2.2.1",
     "gulp-inject": "^1.3.1",
     "gulp-jshint": "^1.11.0",
-    "gulp-karma": "0.0.4",
+    "gulp-karma": "0.0.4",<% if(filters.less) { %>
+    "gulp-less": "3.0.3",<% } %>
     "gulp-livereload": "^3.8.0",
     "gulp-load-plugins": "^1.0.0-rc.1",
     "gulp-minify-css": "^1.1.6",

app/templates/gulpfile.babel(gulp).js

@@ -115,7 +115,8 @@ let styles = lazypipe()
         use: [nib()],
         errors: true
     })<% } if(filters.sass) { %>
-    .pipe(plugins.sass)<% } %>
+    .pipe(plugins.sass)<% } if(filters.less) { %>
+    .pipe(plugins.less)<% } %>
     .pipe(plugins.autoprefixer, {browsers: ['last 1 version']})
     .pipe(plugins.sourcemaps.write, '.')
     .pipe(gulp.dest, '.tmp/app');<% if(filters.babel || filters.coffee) { %>