Changes readme to markdown and adds install docs

README.md

@@ -0,0 +1,45 @@
+# Ruby GNTP
+
+Ruby library for GNTP (Growl Notification Transport Protocol)
+
+## Installation
+
+```
+$ gem install ruby_gntp
+```
+Or, with bundler:
+
+```
+# Gemfile
+gem 'ruby_gntp'
+```
+
+## Usage
+
+```ruby
+require 'rubygems'
+require 'ruby_gntp'
+
+# Standard way
+growl = GNTP.new("Ruby/GNTP self test")
+growl.register({:notifications => [{
+  :name     => "notify",
+  :enabled  => true,
+}]})
+
+growl.notify({
+  :name   => "notify",
+  :title  => "Congraturation",
+  :text   => "Congraturation! You are successful install ruby_gntp.",
+  :icon   => "http://www.hatena.ne.jp/users/sn/snaka72/profile.gif",
+  :sticky => true,
+})
+
+# Instant notification
+GNTP.notify({
+  :app_name => "Instant notify",
+  :title    => "Instant notification", 
+  :text     => "Instant notification available now.",
+  :icon     => "http://www.hatena.ne.jp/users/sn/snaka72/profile.gif",
+})
+```