Update version.

Change log:
- Add webhook support.
- Better error handling.
- Add threaded parameter for telebot constructor. Allowing users to decide telebot to use thread for polling method.

setup.py

@@ -6,7 +6,7 @@ def readme():
         return f.read()
 
 setup(name='pyTelegramBotAPI',
-      version='0.3.7',
+      version='0.3.8',
       description='Python Telegram bot api. ',
       long_description=readme(),
       author='eternnoir',