Merge pull request #30 from BryanSalas/master

Fixed issue #19 as an important improvement for v0.6.0
Process to Thread, Goodbye SQLAlchemy
delete unused
fix small bug
Update README.rst
Update index.rst
remove pysqlite from setup.py
Update README.rst
Update index.rst
help command not found
fix annoyed bug when new tweet disrupt prompt
autopep8
fix serious bug with CPU 100%
add HIDE_PROMPT config, timeout to check interval and fix readline bug with Python 3