[Ramda] Pluck & Props: Get the prop(s) from object array

Pluck:

Get one prop from the object array:

R.pluck('a')([{a: }, {a: }]); //=> [1, 2]
R.pluck()([[, ], [, ]]);   //=> [1, 3]

Props:

R.props(['x', 'y'], {x: , y: }); //=> [1, 2]
R.props(['c', 'a', 'b'], {b: , a: }); //=> [undefined, 1, 2]

var fullName = R.compose(R.join(' '), R.props(['first', 'last']));
fullName({last: 'Bullet-Tooth', age: , first: 'Tony'}); //=> 'Tony Bullet-Tooth'