README.md in skydrive-0.0.2 vs README.md in skydrive-0.1.0

@@ -14,12 +14,57 @@
 
 Or install it yourself as:
 
     $ gem install skydrive
 
+## Initial steps
+
+### OAuth2 Authentication
+
+  Skydrive uses OAuth2 authentication. First you will have to initialize a Skydrive::Oauth::Client object with the client id, client secret, callback url and scopes [(explained here)](http://msdn.microsoft.com/en-us/library/live/hh243646.aspx)
+
+    oauth_client = Skydrive::Oauth::Client.new("your_client_id", "your_client_secret", "http://yourcallbackurl", "wl.skydrive_update,wl.offline_access")
+
+  Obtain the authentication url
+
+    auth_url = oauth_client.authorize_url
+
+  Redirect the user to the above obtained auth_url. After user gives access to your app, they will be redirected to the callback url with a 'code' parameter. Extract this code and get the access token by invoking the following method
+
+    access_token = oauth_client.get_access_token("the_extracted_code")
+
+  If you have already stored the access_token details somewhere, you can instantiate the access token without having to authorize again. But this might require you to store the refresh token(if scope 'wl.offline_access' has been requested) as well.
+
+    access_token = oauth_client..get_access_token_from_hash("access_token", {:refresh_token => "refresh_token", :expires_at => 1234567})
+
+
+### Instantiate a client
+
+  After getting the access token instantiate the Skydrive client
+
+    client = Skydrive::Client.new(:access_token => access_token)
+
 ## Usage
 
-TODO: Write usage instructions here
+### Get the user's home folder
+
+  To get the details about the acting user's home folder
+    folder = client.my_skydrive
+
+  This returns a Skydrive::Folder object.
+
+  Please refer to the documentation for full details about the operations
+
+## Features
+
+1. Every thing is an object. For eg: Skydrive::Folder, Skydrive::File
+2. I have introduced a new object Skydrive::Collection when the result contains multiple type objects
+3. Downloading files have been enabled
+
+## Todo
+
+1. File upload
+2. More specs
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)