Support bodyparser's 'type' option as function

[Equals182]

This module uses bodyparser.text() to parse body as text and passes options object to configure it.

As you can see here, bodyparser accepts options.type options as function, which allows user to control type matching precisely.

Unfortunately, in body-parser-xml there is a line where it check if passed options.type is not an array and convert it into array thus breaking default bodyparser.text()'s ability to use user's function, because that function checks if passed 'type' option is a function

[fiznool]

Fixed in v2.0.0