[Plugin: Front-end Editor] Detailed instructions for using with custom fields?

I’ve read the posts talking about editable-post-meta for editing custom fields, but I don’t completely understand how to set it up. Is the following correct?

# Add editable_post_meta to functions.php. (If so, what is the code to add the function?):
# Then how is it called in the template?

For example, I have several custom fields set up with something like:
<strong>Season:</strong> <?php echo $custom_fields['season'][0]; ?>

So how do I add the editable_post_meta to this?

Thanks!