README.md in metrics-graphics-rails-2.1.3 vs README.md in metrics-graphics-rails-2.1.3.2

@@ -7,11 +7,11 @@
 
 ## Usage
 
 Add this gem to your Gemfile:
 
-    gem 'metrics-graphics-rails', github: 'dgilperez/metrics-graphics-rails'
+    gem 'metrics-graphics-rails'
 
 Add the following directive to your Javascript manifest file (application.js), after the `//= require jquery`:
 
     //= require metrics-graphics-rails
 
@@ -38,17 +38,19 @@
                {'date':new Date('2014-11-02'),'value':18}],
         width: 600,
         height: 250,
         target: '#downloads',
         x_accessor: 'date',
-        y_accessor: 'value',
+        y_accessor: 'value'
     })
 
 This graph can be rendered in a Rails view template with this helper:
 
-    = metrics_graphic_for data, title: "Downloads", description: "This graphic shows a time-series of downloads.", width: 600, height: 250, target: '#downloads', x_accessor: 'date', y_accessor: 'value'
+    = metrics_graphic_for data, title: "Downloads", description: "This graphic shows a time-series of downloads.", width: 600, height: 250, target: '#downloads', x_accessor: 'date', y_accessor: 'value', time_format: '%Y-%m-%d'
 
-where ``data`` is an Array of Hashes of points with a ``date`` and a ``value`` keys and values. Ex: ``[{date: '2014-11-01', value: 12}, date: '2014-11-02', value: 18}]``
+where ``data`` is an Array of Hashes of points with a ``date`` and a ``value`` keys and values. Ex: ``[{date: '2014-11-01', value: 12}, {date: '2014-11-02', value: 18}]``
+
+`width`, `height`, `time_format` and `description` are optional options. 
 
 ## Versioning
 
 metrics-graphics-rails 2.1.3 == metrics-graphics 2.1.3