updated docs

DOCS.md

@@ -1,5 +1,5 @@
 Use the Docker plugin to build and push Docker images to a registry.
-The following parameters are used to configuration this plugin:
+The following parameters are used to configure this plugin:
 
 * **registry** - authenticates to this registry
 * **username** - authenticates with this username
@@ -7,6 +7,8 @@ The following parameters are used to configuration this plugin:
 * **email** - authenticates with this email
 * **repo** - repository name for the image
 * **tag** - repository tag for the image
+* **insecure** - enable insecure communication to this registry
+* **storage_driver** - use `aufs`, `devicemapper`, `btrfs` or `overlay` driver
 
 The following is a sample Docker configuration in your .drone.yml file:
 
@@ -19,4 +21,17 @@ pubish:
     repo: foo/bar
     tag: latest
     file: Dockerfile
+    insecure: false
+```
+
+You may want to dynamically tag your image. Use the `$$BRANCH`, `$$COMMIT` and `$$BUILD_NUMBER` variables to tag your image with the branch, commit sha or build number:
+
+```yaml
+pubish:
+  docker:
+    username: kevinbacon
+    password: $$DOCKER_PASSWORD
+    email: kevin.bacon@mail.com
+    repo: foo/bar
+    tag: $$BRANCH
 ```