Added support for SRT subtitles & BIF trick files
Added support for SRT subtitles (and option on/off) & BIF trick files
Updated rokuencode.sh script to output srt & bif files
Added URLs for subtitle & bif tools; Helper script won't die if these utils are missing
Merge pull request #25 from pturcanu/roku-sub-bif

Added support for SRT subtitles (and on/off toggle option) & BIF trick files (FF/REW on Roku)