Fixed pip script

pip-upgrade

@@ -1,8 +1,12 @@
 #!/usr/bin/env python
 import pip
+import sys
 from subprocess import call
 
 skip=('setuptools', 'pip', 'python', 'disco', 'AudioPython', 'flann')
 
 for dist in pip.get_installed_distributions(skip=skip):
-    call("pip install --upgrade " + dist.project_name, shell=True)
+    if(sys.argv[1] == "2")
+        call("pip install --upgrade " + dist.project_name, shell=True)
+    elif(sys.argv[1] == "3")
+        call("pip3.4 install --upgrade " + dist.project_name, shell=True)