simpified debugger
removed trailing whitespaces
added debugging to auth classes
code cleanup: import order, logging, whitespaces, etc..
replaced own debugger with pythons std logging module
code cleanup: whitespaces
added new useragent and token from pull request #133
replaced some more ole debugger stuff
made logging less verbose
added formatted output for --sync option
made yowsup-cli executable on unix systems
added standard .gitignore file for python projects