Add basic documentation for Markdown

docs/docs.md

@@ -38,7 +38,7 @@ limitations under the License.
 * [hive](./pleasecontribute.html)
 * [ignite](./interpreter/ignite.html)
 * [lens](./interpreter/lens.html)
-* [md](./pleasecontribute.html)
+* [md](./interpreter/markdown.html)
 * [postgresql, hawq](./interpreter/postgresql.html)
 * [sh](./pleasecontribute.html)
 * [spark](./interpreter/spark.html)

docs/interpreter/markdown.md

@@ -0,0 +1,21 @@
+---
+layout: page
+title: "Markdown Interpreter"
+description: "Markdown Interpreter"
+group: manual
+---
+{% include JB/setup %}
+
+## Markdown Interpreter for Apache Zeppelin
+
+### Overview
+[Markdown](http://daringfireball.net/projects/markdown/) is a plain text formatting syntax designed so that it can be converted to HTML.
+In Zeppelin notebook you can use ``` %md ``` in the beginning of a paragraph to invoke the Markdown interpreter to generate static html from Markdown plain text.
+
+In Zeppelin, Markdown interpreter is enabled by default.
+<img src="/assets/themes/zeppelin/img/docs-img/markdown-interpreter-setting.png" width="600px" />
+
+### Example
+The following example demonstrates the basic usage of Markdown in a Zeppelin notebook.
+
+<img src="/assets/themes/zeppelin/img/docs-img/markdown-example.png" width="800px" />