diff --git a/README.md b/README.md
index a337ac7..6026ff3 100644
--- a/README.md
+++ b/README.md
@@ -46,4 +46,25 @@ variable "workspace" {
 }
 ```
 
-This will make Terraform lookup AWS credentials from the `~/.aws/credentials` file using the workspace name as the stanza name. For example the credentials file would look like the shared-creds file in this repo.
\ No newline at end of file
+This will make Terraform lookup AWS credentials from the `~/.aws/credentials` file using the workspace name as the stanza name. For example the credentials file would look like the shared-creds file in this repo.
+
+## atmos -t
+
+Adding the `-t` flag to atmos will make it generate a new `~/.aws/credentials` file from environment variables. You must first include the `default` access key ID & secret access key like this:
+
+```
+DEFAULT_ACCESS_KEY_ID=id
+DEFAULT_SECRET_ACCESS_KEY=key
+```
+
+All additional workspaces need to be prefixed in the same way:
+
+```
+DEV_ACCESS_KEY_ID=id
+DEV_SECRET_ACCESS_KEY=key
+
+QA_ACCESS_KEY_ID=id
+QA_SECRET_ACCESS_KEY=key
+```
+
+Note: Atmos will override your default credentials file as this functionality is for use in a docker container or in situations where you would rather use variables.
\ No newline at end of file
diff --git a/atmos.py b/atmos.py
index 47a90e1..c6042ff 100755
--- a/atmos.py
+++ b/atmos.py
@@ -7,7 +7,7 @@ def main(argv):
     parser = argparse.ArgumentParser(description='Control Terraform Workspaces.')
     g = parser.add_mutually_exclusive_group()
     g.add_argument("command", help="Send commands to terraform with workspace variable context", nargs='?', default=False)
-    parser.add_argument("-t", help="Template mode, gather shared-creds from environment variables", action='store_true', default=False)
+    parser.add_argument("-t", help="Template mode, gather shared-creds from environment variables (Dont use this flag if you dont want your ~/.aws/credentials replaced. This is for CI/CD", action='store_true', default=False)
     args, params = parser.parse_known_args()
     if args.command:
         determine_actions(args, params)
@@ -42,7 +42,7 @@ def generate_creds():
         contents = contents + "[{workspace}]\n".format(workspace=workspace)
         contents = contents + "access_key_id=" + os.environ.get(workspace.upper() + '_ACCESS_KEY_ID') + "\n"
         contents = contents + "secret_access_key=" + os.environ.get(workspace.upper() + '_SECRET_ACCESS_KEY') + "\n"
-    with open(os.path.expanduser('~/.aws/credentials.atmos'), 'w+') as f:
+    with open(os.path.expanduser('~/.aws/credentials'), 'w+') as f:
         f.write(contents)
 
 def get_valid_envs():