[fix] PYTHONPATH settings

searx/webapp.py

 (C) 2013- by Adam Tauber, <asciimoo@gmail.com>
 '''
 
+if __name__ == '__main__':
+    from sys import path
+    from os.path import realpath, dirname
+    path.append(realpath(dirname(realpath(__file__))+'/../'))
+
 import json
 import cStringIO
 import os