bump postcss for url sniffing option

Author: mrjoelkemp

Readme.md

@@ -35,6 +35,7 @@ Current options:
 * `amd.skipLazyLoaded`: tells the AMD detective to omit lazy-loaded dependencies (i.e., inner requires).
 * `es6.mixedImports`: allows for all dependencies to be fetched from a file that contains both CJS and ES6 imports.
  - Note: This will work for any file format that contains an es6 import.
+* `css.url`: tells the CSS detective to include `url()` references to images, fonts, etc.
 
 
 Finding non-JavaScript (ex: Sass and Stylus) dependencies:

package.json

@@ -39,7 +39,7 @@
     "detective-cjs": "^2.0.0",
     "detective-es6": "^1.2.0",
     "detective-less": "^1.0.1",
-    "detective-postcss": "^2.0.0",
+    "detective-postcss": "^2.1.0",
     "detective-sass": "^2.0.0",
     "detective-scss": "^1.0.0",
     "detective-stylus": "^1.0.0",