Merge pull request #238 from wolfy1339/less-version-fix

Make sure we explicitly skip the 2.7.0 release of less

Author: contra

Diff for: package.json

@@ -23,7 +23,7 @@
   "dependencies": {
     "accord": "^0.26.0",
     "gulp-util": "^3.0.7",
-    "less": "^2.6.0",
+    "less": "2.6.x || ^2.7.1",
     "object-assign": "^4.0.1",
     "through2": "^2.0.0",
     "vinyl-sourcemaps-apply": "^0.2.0"