Merge pull request #32 from willdady/master

Exposed file pattern as option

Author: sventschui

README.md

@@ -38,6 +38,16 @@ metalsmith.use(postcss({
 }));
 ```
 
+By default, files with `.css` extension will be parsed. This may be overridden
+by providing a custom pattern e.g.
+
+```js
+metalsmith.use(postcss({
+  pattern: '*.postcss',
+  plugins: { ... }
+}));
+```
+
 ## Metalsmith CLI
 
 Using the Metalsmith CLI, just add the postcss package name,

index.js

@@ -30,7 +30,7 @@ function main(options) {
   var processor = postcss(plugins);
 
   return function (files, metalsmith, done) {
-    var styles = Object.keys(files).filter(minimatch.filter('*.css', { matchBase: true }));
+    var styles = Object.keys(files).filter(minimatch.filter(options.pattern || '*.css', { matchBase: true }));
 
     if(styles.length == 0) {
       done();