readme update

Author: mightyaleksey

README.md

@@ -14,13 +14,7 @@ Compiling in runtime, [universal](https://medium.com/@mjackson/universal-javascr
 
 ## Requirements
 
-To use this tool we require [Node.js v0.12.x](https://github.com/nodejs/node) (or higher) and several modules to be installed.
-
-- [postcss](https://github.com/postcss/postcss) version 5 or higher
-- [postcss-modules-values](https://github.com/css-modules/postcss-modules-values)
-- [postcss-modules-extract-imports](https://github.com/css-modules/postcss-modules-extract-imports)
-- [postcss-modules-local-by-default](https://github.com/css-modules/postcss-modules-local-by-default)
-- [postcss-modules-scope](https://github.com/css-modules/postcss-modules-scope)
+To use this tool we require [Node.js v0.12.x](https://github.com/nodejs/node) (or higher).
 
 ## Installation
 
@@ -30,28 +24,45 @@ $ npm i css-modules-require-hook
 
 ## Usage
 
-In this section I've tried to cover the common cases of usage.
+Now, there are two ways to attach hook: manually or using preset file.
 
-### Development mode
+The first one allows you to pass options manually after module was required, to make it work. Example:
 
-Usually, Node.js caches all the `require` calls by default. In order to invalidate cache for the purpose of development you should set the environment variable `NODE_ENV` to `development`. For example:
+```javascript
+const hook = require('css-modules-require-hook');
 
-```bash
-$ NODE_ENV=development node server.js
-```
+hook({
+  generateScopedName: '[name]__[local]___[hash:base64:5]',
+});
 
-Still you can use `devMode` option (see below) to override behavior which is imposed by environment variable.
+// const styles = require('./icon.css');
+```
 
-### Basic example
+The second one allows you to move options to separated file `cmrh.conf.js`, which should be located in your working directory (`process.cwd()`) or in its ancestors. Example:
 
-Basically to attach the require hook you need to require this module. If you need to adjust it see the tuning section below.
+```javascript
+// cmrh.conf.js
+module.exports = {
+  generateScopedName: '[name]__[local]___[hash:base64:5]',
+};
+```
 
 ```javascript
-require('css-modules-require-hook');
+require('css-modules-require-hook/preset');
+
+// const styles = require('./icon.css');
+```
+
+### Development mode
 
-// var styles = require('./icon.css');
+Usually, Node.js caches all the `require` calls by default. In order to invalidate cache for the purpose of development you should set the environment variable `NODE_ENV` to `development`. For example:
+
+```bash
+$ NODE_ENV=development node server.js
 ```
 
+Still you can use `devMode` option (see below) to override behavior which is imposed by environment variable.
+
 ### Adding custom PostCSS plugins
 
 ```javascript