Removed createSessionTable() to avoid conflicts according to different versions of MySQL, PGSQL, SQLite.
README.md updated with creating table sql code.
README.md refactor.
Merge branch 'master' of https://github.com/apostolp/flight
Merge pull request #14 from antonlazarchenko/master

Removed createSessionTable() to avoid conflicts according to different versions of MySQL, PGSQL, SQLite.  README.md updated with creating table sql code.