README.md in ffprober-0.3.7 vs README.md in ffprober-0.4.0

- old
+ new

@@ -25,11 +25,11 @@
     ffprobe = Ffprober::Parser.from_file("my_awesome_video.mp4")
     ffprobe.size #=> 44772490
 
 ## FFMPEG version
 
-tested with ffprobe version 0.9, 0.10, 0.11, 1.0, 1.1 and 1.2
+tested with ffprobe version 0.9 upto 2.2
 
 according to [ffmpeg changelog](http://git.videolan.org/?p=ffmpeg.git;a=blob_plain;f=Changelog) json output was added in version 0.9
 
 [ffprobe documentation](http://www.ffmpeg.org/ffprobe.html)
 
@@ -55,14 +55,12 @@
 - manderson
 - rmoriz
 
 ## Contributing
 
-1. Fork it
-2. Create your feature branch (`git checkout -b my-new-feature`)
-3. Commit your changes (`git commit -am 'Added some feature'`)
-4. Push to the branch (`git push origin my-new-feature`)
-5. Create new Pull Request
+see [CONTRIBUTING.md][contributing]
+
+[contributing]: https://github.com/beanieboi/ffprober/blob/master/CONTRIBUTING.md
 
 ## License
 
 Copyright (c) 2011 Benjamin Fritsch.
 