ignore layout file if user did not specifically ask for a layout and file is not present

[defunctzombie]

If the layout file is not present, the current behavior is to fail and inform the user. It has been suggested it it should instead render the file without a layout.

The behavior would be as follows:

no layout view option specified

• if layout file is present, it will be used
• if layout file is not present, it will be ignored

layout: true (or other string value)

• if layout file is present, it will be used
• if layout file is not present, it will cause an error

layout: false

• if layout file is present, it will be ignored
• if layout file is not present, it will be ignored

see issue #38 for additional notes

[stechz]

Oops, I see it's already been assigned to you. I think I just wrote this patch. I put the pull request here (not sure if there's a way to merge):

#40