Unable to support pages in the iFrame with no page name

[DSaunders]

Pages in web frameworks can be identified by a route rather than an explicit filename (for example http://mysite.com/somesite/).

If you do not set the exceptPages setting (as you do not want any pages to be excluded), and the page in the iFrame does not have a name, this causes the plugin not to resize the iFrame on these lines:

if((_pageHeight <= base.options.minimumHeight && base.options.exceptPages.indexOf(_pageName) == -1)) {
tryFixIframe();
} else if (_pageHeight > base.options.minimumHeight && base.options.exceptPages.indexOf(_pageName) == -1) {
base.setIframeHeight(_pageHeight + base.options.heightOffset);
}

I added a default value when _pageName is empty by doing the following:

if (!_pageName) {
_pageName = 'unnamed-pages';
}

This allows the plugin to work on unnamed pages, and also allows the caller to ignore all of these by setting the exceptPages to 'unnamed-pages' in configuration.

I was going to push my branch to your repository and raise a pull request but I was unable to (I do not have access to push branches), hence raising an issue instead.