add example

example/README.md

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+# demo-role
+
+Role to demonstrate ansible-doctor
+
+## Default Variables
+
+### demo_role_unset
+
+#### Default value
+
+```YAML
+demo_role_unset:
+```
+
+#### Example usage
+
+```YAML
+demo_role_unset: some value
+```
+
+
+---
+
+### demo_role_empty
+
+#### Default value
+
+```YAML
+demo_role_empty: ''
+```
+
+---
+
+### demo_role_single
+
+#### Default value
+
+```YAML
+demo_role_single: b
+```
+
+---
+
+### demo_role_empty_dict
+
+#### Default value
+
+```YAML
+demo_role_empty_dict: {}
+```
+
+#### Example usage
+
+```YAML
+demo_role_empty_dict:
+  key1:
+    sub: some value
+  key2:
+    sublist:
+      - subval1
+      - subval2
+```
+
+
+---
+
+### demo_role_dict
+
+#### Default value
+
+```YAML
+demo_role_dict:
+  key1:
+    sub: some value
+```
+
+#### Example usage
+
+```YAML
+demo_role_dict:
+  key1:
+    sub: some value
+  key2:
+    sublist:
+      - subval1
+      - subval2
+```
+
+
+---
+
+### demo_role_other_tags
+
+The role requires epel repository and pip to work.
+You can use dockerengine_packages_extra to install these dependencys.
+
+#### Default value
+
+```YAML
+demo_role_other_tags: []
+```
+
+---
+
+### dockerengine_packages_extra
+
+#### Example usage
+
+```YAML
+dockerengine_packages_extra:
+  - package1
+  - package2
+```
+
+
+---
+
+### demo_role_undefined_var
+
+#### Default value
+
+```YAML
+demo_role_undefined_var: _undefined_
+```
+
+---
+
+## Dependencies
+
+None.
+
+## License
+
+MIT
+
+## Author
+
+Robert Kaussow <mail@example.com>
+

example/demo-role/defaults/main.yml

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+---
+demo_role_unset:
+# @var demo_role_unset:example: "some value"
+demo_role_empty: ""
+demo_role_single: 'b'
+# @var demo_role_empty_dict:example: {"key1": {"sub": "some value"}, "key2": {"sublist": ["subval1", "subval2"]}}
+demo_role_empty_dict: {}
+
+# @var demo_role_dict:example: >
+# demo_role_dict:
+#   key1:
+#     sub: some value
+#   key2:
+#     sublist:
+#       - subval1
+#       - subval2
+# @end
+demo_role_dict:
+  key1:
+    sub: some value
+
+# @var demo_role_other_tags:description: >
+# The role requires epel repository and pip to work.
+# You can use dockerengine_packages_extra to install these dependencys.
+# @end
+
+# @var dockerengine_packages_extra:example: ["package1", "package2"]
+demo_role_other_tags: []
+
+# @var demo_role_undefined_var: _undefined_

example/demo-role/meta/main.yml

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+---
+# @meta name: demo-role
+galaxy_info:
+  description: Role to demonstrate ansible-doctor
+  author: Robert Kaussow <mail@example.com>
+  license: MIT
+  min_ansible_version: 2.4
+  platforms:
+    - name: EL
+      versions:
+        - 7
+  galaxy_tags:
+    - demo
+    - documentation
+dependencies: []

example/demo-role/tasks/main.yml

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+---