Corrected update_field function to save data as an array of strings

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Minor label change

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Fixed conditional logic issue with flexible content field

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Updated read me

Signed-off-by: Elliot Condon <e@elliotcondon.com>