Fix issue when an element with ID of `exports` is defined in the browser.
Fix issue when an element with ID of `exports` is defined in the browser.

Elements with IDs automatically have their IDs exposed. This causes errors
where `module` is not defined, and yet `module.exports = _` is run. This also
aligns the export with UMD.
eggpi/awesomplete,vlazar/awesomplete,LeaVerou/awesomplete,vlazar/awesomplete,bsvobodny/awesomplete,bchcheng/awesomplete,bchcheng/awesomplete,LeaVerou/awesomplete,eggpi/awesomplete,bsvobodny/awesomplete