Added analytics information to readme.

readme.textile

@@ -56,6 +56,32 @@ Or the shorthand form:
 pre. Google::UrlShortener.expand!("http://goo.gl/r5akx") # => http://blog.josh-nesbitt.net
 
 
+h3. Getting more data from an expanded url
+
+More data is available from a URL once it's been expanded:
+
+pre. url = Google::UrlShortener::Url.new(:short_url => "http://goo.gl/r5akx")
+url.expand! # => http://blog.josh-nesbitt.net
+url.created_at # => 2011-01-11
+url.created_at.year # => 2011
+url.analytics # => Google::UrlShortener::Analytics
+url.analytics.all # => Google::UrlShortener::AnalyticsGroup
+url.analytics.all.browsers # => { "Chrome" => 1 }
+url.analytics.all.countries # => { "GB" => 1 }
+url.analytics.all.platforms # => { "Macintosh" => 1 }
+url.analytics.all.referrers # => { "Unknown/empty" => 1 }
+url.analytics.all.long_url_clicks # => 23
+url.analytics.all.short_url_clicks # => 3
+
+Available scopes are:
+
+pre. all
+month
+week
+day
+two_hours
+
+E.g: @url.analytics.month@.
 
 h2. Bugs