Define a method ```hello``` that ```returns``` "Hello, Name!" to a given ```name```, or says Hello, World! if name is not given (or passed as an empty String).
Assuming that ```name``` is a ```String``` and it checks for user typos to return a name with a first capital letter (Xxxx).
Examples:
hello = lambda n='', d='World': "Hello, %s!" % (n or d).title()
hello = lambda n='', d='World': "Hello, %s!" % (n or d).title()