README.md in web_font-0.0.5 vs README.md in web_font-0.0.6

@@ -1,8 +1,8 @@
 # WebFont
 
-TODO: Write a gem description
+WebFont is a Ruby library that will help you download fonts from Google. For now, we support only [Google Font](http://www.google.com/fonts).
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -14,12 +14,39 @@
 
 Or install it yourself as:
 
     $ gem install web_font
 
+## Dependencies
+
+WebFont depends on [wget](http://en.wikipedia.org/wiki/Wget). Make sure you have it installed first.
+
+For Ubuntu:
+```
+sudo apt-get install wget
+```
+
+To download font from Google, you need to have [Google API Key](https://www.google.com/search?q=google+api+key), then set ``GOOGLE_API_KEY`` environment variable.
+
 ## Usage
 
-TODO: Write usage instructions here
+```ruby
+require 'web_font'
+
+ENV['GOOGLE_API_KEY'] = '...'
+WebFont::Data.path    = '/some/where/in/your/disk'
+
+# First you need to have font index
+WebFont::Data.download
+
+# Then you can download font 'Open Sans' and store it in /users/foo
+downloader = WebFont::Downloader.new
+downloader.download('Open Sans', '/users/foo')
+
+# You can also find font in index as well
+finder = WebFont::Finder.new
+finder.find('Open Sans')
+```
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)