fixed bug: SyntaxError: invalid syntax

Traceback (most recent call last):
  File "test_server_start.py", line 7, in <module>
    halite.start(debug=True)
  File "/root/halite/halite/__init__.py", line 23, in start
    from . import server_bottle
  File "/root/halite/halite/server_bottle.py", line 107
    query = { key: val for key, val in bottle.request.query.items()}
                         ^
        for route in currentApp.routes