correcting year is out of range error

cmd_str = create edge eats_at from #12:7343 to #17:27746 set created_at ="2014-10-24"   
cl.command(cmd_str)
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/orient.py", line 204, in command
    .prepare(( QUERY_CMD, ) + args).send().fetch_response()
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/messages/commands.py", line 145, in fetch_response
    return self._read_sync()
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/messages/commands.py", line 193, in _read_sync
    res.append( self._read_record() )
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/messages/base.py", line 335, in _read_record
    _res = ORecordDecoder( __res['content'].rstrip() )
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/serialization.py", line 156, in __init__
    self.__decode()
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/serialization.py", line 189, in __decode
    self._stateCase[self._state](char, c_class)
  File "/Library/Python/2.7/site-packages/pyorient-1.1.1-py2.7.egg/pyorient/serialization.py", line 475, in __state_number
    token_value = datetime.fromtimestamp(float(self._buffer))
ValueError: year is out of range
Update serialization.py
Merge pull request #20 from mokpro/master

correcting year is out of range error