-```bash
-$ gem install google-api-client
-```
-
-## Example Usage
-
-```ruby
-require 'google/api_client'
-require 'google/api_client/client_secrets'
-require 'google/api_client/auth/installed_app'
-
-# Initialize the client.
-client = Google::APIClient.new(
- :application_name => 'Example Ruby application',
- :application_version => '1.0.0'
-)
-
-# Initialize Google+ API. Note this will make a request to the
-# discovery service every time, so be sure to use serialization
-# in your production code. Check the samples for more details.
-plus = client.discovered_api('plus')
-
-# Load client secrets from your client_secrets.json.
-client_secrets = Google::APIClient::ClientSecrets.load
-
-# Run installed application flow. Check the samples for a more
-# complete example that saves the credentials between runs.
-flow = Google::APIClient::InstalledAppFlow.new(
- :client_id => client_secrets.client_id,
- :client_secret => client_secrets.client_secret,
- :scope => ['https://www.googleapis.com/auth/plus.me']
-)
-client.authorization = flow.authorize
-
-# Make an API call.
-result = client.execute(
- :api_method => plus.activities.list,
- :parameters => {'collection' => 'public', 'userId' => 'me'}
-)
-
-puts result.data
-```
-
-## API Features
-
-### API Discovery
-
-To take full advantage of the client, load API definitions prior to use. To load an API:
-
-```ruby
-urlshortener = client.discovered_api('urlshortener')
-```
-
-Specific versions of the API can be loaded as well:
-
-```ruby
-drive = client.discovered_api('drive', 'v2')
-```
-
-Locally cached discovery documents may be used as well. To load an API from a local file:
-
-```ruby
-doc = File.read('my-api.json')
-my_api = client.register_discovery_document('myapi', 'v1', doc)
-```
-
-### Authorization
-
-Most interactions with Google APIs require users to authorize applications via OAuth 2.0. The client library uses [Signet](https://github.com/google/signet) to handle most aspects of authorization. For additional details about Google's OAuth support, see [Google Developers](https://developers.google.com/accounts/docs/OAuth2).