change twitter library from python-twitter to pweepy

- change account.py api method
- fix bug in location file read process
- comment out reply method test(error in initializing Status instance))
modify reply method test

- change test data from json to mock
- delete test data
fix comment
change travis setting to tweepy
add user_timeline streaming api method

- add auto reply method for mention tweet
- add streaming listerner class
- modify conf key to screen name
remove unused python-twitter import
Merge pull request #4 from smrmkt/feature/replace_to_tweepy

Feature/replace to tweepy