AUTHENTICATION.md in gcloud-0.2.0 vs AUTHENTICATION.md in gcloud-0.3.0

@@ -43,17 +43,17 @@
 The **Project ID** and **Credentials JSON** can be placed in environment variables instead of declaring them directly in code. Each service has its own environment variable, allowing for different service accounts to be used for different services. The path to the **Credentials JSON** file can be stored in the environment variable, or the **Credentials JSON** itself can be stored for environments such as Docker containers where writing files is difficult or not encouraged.
 
 Here are the environment variables that Datastore checks for project ID:
 
 1. DATASTORE_PROJECT
-2. GOOGLE_CLOUD_PROJECT
+2. GCLOUD_PROJECT
 
 Here are the environment variables that Datastore checks for credentials:
 
 1. DATASTORE_KEYFILE - Path to JSON file
-2. GOOGLE_CLOUD_KEYFILE - Path to JSON file
+2. GCLOUD_KEYFILE - Path to JSON file
 3. DATASTORE_KEYFILE_JSON - JSON contents
-4. GOOGLE_CLOUD_KEYFILE_JSON - JSON contents
+4. GCLOUD_KEYFILE_JSON - JSON contents
 
 ### Cloud SDK
 
 This option allows for an easy way to authenticate during development. If credentials are not provided in code or in environment variables, then Cloud SDK credentials are discovered.