add missing minus sign - thanks @masonsbro
Fix the 'strip silence' effect

Previously it could not find 'split_on_silence', and then
was attempting to supply it with the wrong argument
Merge pull request #66 from haydnnewport/master

Fix the 'strip silence' effect
README: "PyDub let's you" -> "PyDub lets you"

http://public.wsu.edu/~brians/errors/lets.html
Correct indentation: tab -> spaces.
Merge pull request #69 from edbrannin/master

README: "PyDub let's you" -> "PyDub lets you"
Merge pull request #72 from lndbrg/patch-1

Correct indentation: tab -> spaces.
SVG image is nice and sharp on retina displays
Update audio_segment.py
new release for fix in ffmpeg assignment shim