added timeout option to TwitterStream

In case of low tweet volume, we now can timeout and exit iterator to update search query or other housekeeping tasks.
Deal with SSL errno 2 in timeout mode
Deal with SSL errno2 in timetout mode
Deal with reading empty buffer (SSL errno2) in timeout mode
change version number to 1.10.1
Update setup.py
Merge pull request #178 from dkanygin/master

added timeout option to TwitterStream
In case of low tweet volume, we now can timeout and exit iterator to update search query or other housekeeping tasks.