getSeries with one result doesn't return an array

[ja1984]

The method should probably always return an array, even if there's only one result as it will "break" an for loop for the results.

[edwellbrook]

@ja1984 Hey, sorry for not seeing this until now. Just pushed an update to fix this. Thanks for pointing it out. Let me know if anything else comes up.

(Updated on npm, version 0.4.7)