pyannote-face.py demo exception caused by numpy 0.12

[crhan]

when running the pyannote-video nootbook, this error will occur:

Traceback (most recent call last):
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/bin/pyannote-face.py", line 483, in <module>
    shift=shift, labels=labels)
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/bin/pyannote-face.py", line 409, in demo
    audio_clip = AudioFileClip(filename)
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/lib/python3.5/site-packages/moviepy/audio/io/AudioFileClip.py", line 63, in __init__
    buffersize=buffersize)
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/lib/python3.5/site-packages/moviepy/audio/io/readers.py", line 70, in __init__
    self.buffer_around(1)
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/lib/python3.5/site-packages/moviepy/audio/io/readers.py", line 234, in buffer_around
    self.buffer =  self.read_chunk(self.buffersize)
  File "/home/ruohan.chen/.anaconda3/envs/pyannote/lib/python3.5/site-packages/moviepy/audio/io/readers.py", line 123, in read_chunk
    self.nchannels))
TypeError: 'float' object cannot be interpreted as an integer

This problem has been solved in moviepy 0.2.2.13 version, so it should great equal than 0.2.2.13. This Fix is described at Zulko/moviepy#383

[hbredin]

I had to change the base branch to develop.
This fix will be part of next release.

Thanks a lot, @crhan