docs: Moved all documentation to readme

Author: devatherock

DOCS.md

@@ -16,14 +16,70 @@ docker run --rm \
   -e PLUGIN_DEBUG=true \
   -v path/to/yamls:/work \
   -w=/work \
-  devatherock/drone-yaml-validator:latest
+  devatherock/drone-yaml-validator:1.5.0
 ```
 
 ### CI
-Please refer [docs](DOCS.md)
+The following parameters can be set to configure the plugin.
+
+*   **debug** - Flag to enable debug logs. Optional, by default, debug logs are disabled
+
+*   **continue_on_error** - Flag to indicate if processing should continue when an invalid file is encountered. Optional,
+    defaults to true
+
+*   **search_path** - If specified, only YAMLs present in this path will be validated
+
+*   **allow_duplicate_keys** - Flag to indicate if YAML files with duplicate keys should be considered valid. Optional,
+    defaults to false
+
+#### vela
+
+```yaml
+steps:
+  - name: yaml_validator
+    ruleset:
+      branch: master
+      event: push
+    image: devatherock/vela-yaml-validator:1.5.0
+    parameters:
+      debug: false
+      continue_on_error: true
+      allow_duplicate_keys: false
+```
+
+#### drone
+
+```yaml
+steps:
+  - name: yaml_validator
+    image: devatherock/drone-yaml-validator:1.5.0
+    settings:
+      debug: false
+      continue_on_error: true
+      allow_duplicate_keys: false
+```
+
+#### CircleCI
+
+```yaml
+version: 2.1
+jobs:
+  validate_yamls:
+    docker:
+      - image: devatherock/vela-yaml-validator:1.5.0
+    working_directory: ~/my-repo
+    environment:
+      PARAMETER_DEBUG: false
+      PARAMETER_CONTINUE_ON_ERROR: true
+      PARAMETER_ALLOW_DUPLICATE_KEYS: false
+    steps:
+      - checkout
+      - run: sh /scripts/entry-point.sh
+```
 
 ## Tests
 To test the latest plugin images, run the below command
+
 ```shell
 make functional-test
 ```