Added a check to see if exif_read_data function is available.
Added a check to see if exif_read_data function is available.

Thanks to J Cobb for the contribution:
https://github.com/blueimp/jQuery-File-Upload/pull/1847

blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload,Verde1705/verde1705.github.io,Verde1705/verde1705.github.io,GrizliK1988/PhotoWidget,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload,blueimp/jQuery-File-Upload