README.md in i18n-tasks-0.7.2 vs README.md in i18n-tasks-0.7.3

- old
+ new

@@ -23,11 +23,11 @@
 ## Installation
 
 Add to Gemfile:
 
 ```ruby
-gem 'i18n-tasks', '~> 0.7.2'
+gem 'i18n-tasks', '~> 0.7.3'
 ```
 
 Copy default [configuration file](#configuration) (optional):
 
 ```console
@@ -344,9 +344,17 @@
 
 <a name="translation-config"></a>
 ### Google Translate
 
 `i18n-tasks translate-missing` requires a Google Translate API key, get it at [Google API Console](https://code.google.com/apis/console).
+
+Where this key is depends on your Google API console:
+
+* Old console: API Access -> Simple API Access -> Key for server apps.
+* New console: Project -> APIS & AUTH -> Credentials -> Public API access -> Key for server applications.
+
+In both cases, you may need to create the key if it doesn't exist.
+
 Put the key in `GOOGLE_TRANSLATE_API_KEY` environment variable or in the config file.
 
 ```yaml
 # config/i18n-tasks.yml
 translation: