updated fork
only load meta data if needed

commit removes the loading of meta data if it is not needed
Merge https://github.com/smremde/node-fluent-ffmpeg into smremde

Conflicts:
	lib/fluent-ffmpeg.js
	lib/metadata.js
	lib/processor.js
	package.json
Merge branch 'smremde'

# By Stephen Remde
# Via Spruce (Felix Fichte) (1) and Stephen Remde (1)
* smremde:
  only load meta data if needed
  updated fork