Provide nifty placeholder if original image or cache does not exist.

[mikebronner]

No description provided.

[mikebronner]

Also provide placeholders out of the box, as a tool for mocking up. This would take effect if the source image were left empty. Like this:

$imagery->conjure(null, 400, 300)->placeholder();

or maybe

$imagery->conjure()->placeholder(400, 300);

I think I like the second one better.

[mikebronner]

Deferring to next milestone, tricky to implement with direct access without laravel intercepting each request.