fixed linux transcoding
added the experimental parameter without requiring dev version of fluent-ffmpeg
Merge pull request #6 from bryansills/linuxaac

fixed linux transcoding! thanks bryansills
removed compatibility check from directory listings because it's been superceded by transcoding
adding support for using HDSG as a module in another app
tweaked readme
tweaked readme
tweaked readme
tweaked readme
tweaked readme
tweaked readme
transcoding with selected audio/video tracks
external subtitles support
tweaked readme
tweaked readme
tweaked readme
tweaked readme
support for subtitles from internal streams
support for subtitles from internal streams
removed deprecated transcode_cmd