add functionality, search in folder

[fvil...@cognosonline.com]

Hi glogg team,

Will be very helpfull if you implement a folder search in the tool, because as you can imagine, if you have 100´s of big logs ( > 1Gb) and you need to search for one string, will be very helpfull.

Thanks and I hope you could add this functionality.

Best regards,

Francisco Villate