How to include two pictures side by side in Markdown for IPython Notebook (Jupyter)?
You can create tables using pipes and dashes like this.
A | B
- | -
 | 
see Tables syntax
I don't have enough reputation to add comments, so I'll just put my 2 cents as a separate answer. I also found that JMann's solution didn't work, but if you wrap his implementation with table tags:
<table><tr>
<td> <img src="Nordic_trails.jpg" alt="Drawing" style="width: 250px;"/> </td>
<td> <img src="Nordic_trails.jpg" alt="Drawing" style="width: 250px;"/> </td>
</tr></table>
then it works.
JMann's solution didn't work for me. But this one worked
from IPython.display import HTML, display
display(HTML("<table><tr><td><img src='img1'></td><td><img src='img2'></td></tr></table>"))
I took the idea from this notebook