function property(key) {
	      return baseProperty(key + '');
	    }
Creates a function which returns the property value of `key` on a given object.

@static
@memberOf _
@category Utility
@param {string} key The key of the property to get.
@returns {Function} Returns the new function.
@example

var users = [
  { 'user': 'fred' },
  { 'user': 'barney' }
];

var getName = _.property('user');

_.map(users, getName);
// => ['fred', barney']

_.pluck(_.sortBy(users, getName), 'user');
// => ['barney', 'fred']