Modified type array
Modified remove length array
Added data encoding value map for specific data types
Added remove default value map for specific data types
Modified Convert function to perform

- data type conversion
	eg: 'TEXT'=>'VARCHAR(65535)'

- remove length for configured data types
	eg: int(11) => INT

- remove default values for configured data types
	eg: datetime & timestamp

- Add encoding type
	eg: 'VARCHAR' => 'TEXT255',
Modified buildQuery function to add encoding types
Merge pull request #1 from lubanasachin/master

Improved mapping & Added Default value handling "by Sachin"