README.md in iex-ruby-client-0.3.3 vs README.md in iex-ruby-client-0.4.0

@@ -81,10 +81,22 @@
 company.company_name # 'Microsoft Corporation'
 ```
 
 See [#company](https://iextrading.com/developer/docs/#company) for detailed documentation or [company.rb](lib/iex/resources/company.rb) for returned fields.
 
+### Get Company Logo
+
+Fetches company logo for a symbol.
+
+```ruby
+logo = IEX::Resources::Logo.get('MSFT')
+
+logo.url # 'https://storage.googleapis.com/iex/api/logos/MSFT.png'
+```
+
+See [#logo](https://iextrading.com/developer/docs/#logo) for detailed documentation or [logo.rb](lib/iex/resources/logo.rb) for returned fields.
+
 ### Get Recent News
 
 Fetches news for a symbol.
 
 ```ruby
@@ -143,9 +155,13 @@
 ## Errors
 
 ### SymbolNotFound
 
 If a symbol cannot be found an [IEX::Errors::SymbolNotFound](lib/iex/errors/symbol_not_found_error.rb) exception is raised.
+
+### ClientError
+
+All errors that return HTTP codes 400-600 result in a [IEX::Errors::ClientError](lib/iex/errors/client_error.rb) exception.
 
 ## Contributing
 
 See [CONTRIBUTING](CONTRIBUTING.md).