Added table creation methods; for standalone usage and with insert() method as forced table creation.

[oytuntez]

• Added createTable() method for creating new tables
• Added optional table creation on insert() method, if table doesn't exist.
• Changed instructions accordingly and provided example for createTable().

[oytuntez]

Hi!

As I'm trying to use your library in a dynamic system, I needed some functionality for table creation and I pushed them here.