Use PyPI version for python-vlc

The github repo for python-vlc has a structure that will prevent its direct install from the requirements (the actual setup.py for the module is in generated/2.2). Use the PyPI version instead.

Author: oaubert

src/requirements.txt

@@ -1,10 +1,10 @@
 requests>=2.13.0
 CherryPy>=10.1.1
-git+https://github.com/oaubert/python-vlc.git#egg=python-vlc
+python-vlc
 pyalsaaudio>=0.8.4
 webrtcvad>=2.0.10
 pyyaml
 pocketsphinx>=0.1.3
 coloredlogs
 future>=0.16.0
-pexpect>=4.2.1
+pexpect>=4.2.1