diff --git a/README.md b/README.md
index ecaf9cf..4aac00e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,34 @@
 
 Push-Deploy is a Python application which helps to securely and simply enable communication between external tools (GitHub Actions, Circle CI, etc…) and Kubernetes without exposing cluster credentials.
 
-In particular for projects which may not have `semver` inplace where other tools like keel.sh and weave/flux would make more sense.
+In particular for projects which may not have `semver` inplace where other tools like [keel.sh](https://keel.sh/) and [weave/flux](https://github.com/fluxcd/flux) would make more sense.
 
 --
 
+### Disclaimer ###
+
+This is pre-release software and is very limited. It will have bugs and lacks many features planned for later releases. The API may also change in ways which are not backwards compatible.
+
+### Configuration ###
+
+* `PD_NAMESPACE`: Namespace of the deployment
+* `PD_DEPLOYMENT`: Name of the deployment
+* `PD_REGISTRY`: Registry URI e.g. `258640715359.dkr.ecr.us-west-2.amazonaws.com`
+* `PD_SECRET_KEY`: A very long (64+ Char) Alpha Numeric string
+* `PD_USER`: Username to authenticate with
+* `PD_PASSWORD`: Password to authenticate with
+
+### Usage ###
+
+```bash
+TOKEN=$(
+	curl -H "Content-Type: application/json" -X POST \
+	-d '{"username":"service_account_name","password":"as8djareallylongstring9asdj8a8sdj"}' \
+	http://pushdeploy.domain.com/api/v1/auth
+	)
+```
+
+```bash
+curl -H "Authorization: Bearer $TOKEN" \
+http://pushdeploy.domain.com/api/v1/deploy?image_name=my_image&image_tag=v1.0.3
+```
\ No newline at end of file
diff --git a/pushdeploy/apiv1.py b/pushdeploy/apiv1.py
index 6af0ca7..bbcf1d0 100755
--- a/pushdeploy/apiv1.py
+++ b/pushdeploy/apiv1.py
@@ -79,7 +79,7 @@ def login():
 @bp.route('/deploy', methods=['GET'])
 @jwt_required
 def deploy():
-    commit_sha = request.args['commit_sha']
+    image_tag = request.args['image_tag']
     image_name = request.args['image_name']
-    deploy = update_deployment(deployment=read_deployment(), image_name=image_name, image_tag=commit_sha)
+    deploy = update_deployment(deployment=read_deployment(), image_name=image_name, image_tag=image_tag)
     return jsonify(msg=deploy), 201