How to do tables in GitHub flavoured Markdown

tables.md

This:

heading 1 | heading 2 | heading 3
--- | --- | ---
abc | bcd | cde
def | efg | fgh

becomes this:

heading 1	heading 2	heading 3
abc	bcd	cde
def	efg	fgh

---

You can also use plain old HTML tables. This:

<table>
  <tr>
    <th>heading 1</th>
    <th>heading 2</th>
    <th>heading 3</th>
  </tr>
  <tr>
    <td>abc</td>
    <td>bcd</td>
    <td>cde</td>
  </tr>
  <tr>
    <td>def</td>
    <td>efg</td>
    <td>fgh</td>
  </tr>
</table>

becomes this:

heading 1	heading 2	heading 3
abc	bcd	cde
def	efg	fgh

Using HTML is handy because you can do more advanced things like nested tables, or adding lists within cells.

How do you do table inside a table in markdown?

heading 1	heading 2	heading 3
abc	bcd	cde

heading 1	heading 2	heading 3
abc	bcd	cde
def	efg	fgh

| efg | fgh