Column A | Column B
:--|:--
Stuff goes here | More stuff here
Even more stuff | Okay that's enough

Edited for more options:

You can make the text alignment different by changing the ":--":

Left | Center | Right
:--|:--:|--:
This is | This is | This is
Left aligned. | Center aligned. | Right aligned.

So, ":--"  is left, ":--:" is center, and "--:" is right.