Add documentation and changelog

Author: TrySound

CHANGELOG.md

@@ -13,6 +13,10 @@ See [resolve option](https://github.com/postcss/postcss-import#resolve) for more
 ([#130](https://github.com/postcss/postcss-import/pull/130))
 - Changed: glob resolver do not add `moduleDirectories` and parse all uri as glob patterns
 ([#131](https://github.com/postcss/postcss-import/pull/131))
+- Added: support custom `load` option
+([#144](https://github.com/postcss/postcss-import/pull/144))
+- Removed: `encoding` option. Encoding can be specified in custom `load` option
+([#144](https://github.com/postcss/postcss-import/pull/144))
 
 # 7.1.3 - 2015-11-05
 

README.md

@@ -118,13 +118,6 @@ Default: `undefined`
 
 An array of plugins to be applied on each imported file.
 
-#### `encoding`
-
-Type: `String`  
-Default: `utf8`
-
-Use if your CSS is encoded in anything other than UTF-8.
-
 #### `onImport`
 
 Type: `Function`  
@@ -149,6 +142,14 @@ You can overwrite the default path resolving way by setting this option.
 This function gets `(id, basedir, importOptions)` arguments and returns full path, array of paths or promise resolving paths.
 You can use [resolve](https://github.com/substack/node-resolve) for that.
 
+#### `load`
+
+Type: `Function`  
+Default: null
+
+You can overwrite the default loading way by setting this option.
+This function gets `(filename, importOptions)` arguments and returns content or promised content.
+
 #### `skipDuplicates`
 
 Type: `Boolean`