changed onReady logic to wait for interactive state instead of complete

[struys]

It seems unnecessary to wait for complete. As far as I can tell, interactive state should be sufficient for anything easyxdm does.

[oyvindkinsey]

In IE, the readystate can become interactive if you're synchronously loading the script in the header, at which point the body does not yet exist. So if you want to support interactive, you'll have to exclude IE from this.

[struys]

Man, that sucks.

Instead of specifically looking for IE, would it be acceptable to add a document.body check if we detect interactive state?

[oyvindkinsey]

Closing this for now. Please feel free to reopen if there's a more targeted fix in place.