README.md in i18n-tasks-0.2.3 vs README.md in i18n-tasks-0.2.4

@@ -1,6 +1,6 @@
-# i18n-tasks [![Build Status](https://travis-ci.org/glebm/i18n-tasks.png?branch=master)](https://travis-ci.org/glebm/i18n-tasks) [![Code Climate](https://codeclimate.com/github/glebm/i18n-tasks.png)](https://codeclimate.com/github/glebm/i18n-tasks)
+# i18n-tasks [![Build Status](https://travis-ci.org/glebm/i18n-tasks.png?branch=master)](https://travis-ci.org/glebm/i18n-tasks) [![Coverage Status](https://coveralls.io/repos/glebm/i18n-tasks/badge.png?branch=master)](https://coveralls.io/r/glebm/i18n-tasks?branch=master) [![Code Climate](https://codeclimate.com/github/glebm/i18n-tasks.png)](https://codeclimate.com/github/glebm/i18n-tasks)
 
 
 Tasks to manage translations in Rails.
 
 ![i18n-screenshot](https://raw.github.com/glebm/i18n-tasks/master/doc/img/i18n-tasks.gif "i18n-tasks output screenshot")
@@ -92,9 +92,28 @@
   write:
     # this would save all devise keys in it's own file (per locale):
     - ['devise.*', 'config/locales/devise.%{locale}.yml']
     # this is the default catch-all:
     - 'config/locales/%{locale}.yml' # path is short for ['*', path]
+```
+
+Key matching syntax work this way:
+
+| syntax       | description                                               |
+|:------------:|:----------------------------------------------------------|
+|      `*`     | matches everything                                        |
+|      `:`     | matches a single key                                      |
+|   `{a, b.c}` | match any in set, can use `:` and `*`, match is captured  |
+
+Example:
+
+```yaml
+data:
+  write:
+    # store sorcery and simple_form keys in the respective files:
+    - ['{sorcery,simple_form}.*', 'config/locales/\\1.%{locale}.yml']
+    # write every namespace to its own file:
+    - ['{:}.*', 'config/locales/\1.%{locale}.yml']
 ```
 
 ### Translation
 
 Set `GOOGLE_TRANSLATE_API_KEY` environment variable, or specify the key in config/i18n-tasks.yml: