Doesn't handle UTF-8 with BOM Ris files safely

[apps4research]

First, let me say, thank you for the great script. Working very well and fast!

Just came across a minor issue with Web of Sciene RIS files, they have a BOM at the start. Would be neat if the converter checked for the BOM and removed it. :)

[WeDias]

Thank you very much :)
Could you send me a RIS file with this BOM?

[apps4research]

Sure, here 2 files (with and without BOM) and a screenshot of the error. The utf-8 Bom is just how you encode the RIS file (you can do it any half-way decent text editor.
bom_problem.zip