Fixed #284. Added support for direction control.

[Kingwl]

Fixes #284 . This adds support for select direction of menu

[coveralls]

Coverage remained the same at 93.014% when pulling 091e4dd on Kingwl:master into 2b14448 on JedWatson:master.

[coveralls]

Coverage remained the same at 93.014% when pulling 336df18 on Kingwl:master into 2b14448 on JedWatson:master.

[rvignacio]

Any chance we get this merged?

[JedWatson]

Thanks for the PR @Kingwl and sorry it's taken so long to review.

Makes sense as a prop, but I'm wondering if/how this should interact with auto-detecting space around the control instead if we were to implement that?

What are your thoughts?

[AndersDJohnson]

@JedWatson It'd be great if this feature made it into a release soon.

[burtyish]

Makes sense as a prop, but I'm wondering if/how this should interact with auto-detecting space around the control instead if we were to implement that?

@JedWatson FYI, #810 mentions a solution which provides automatically determining the direction based on available space via usage of tether.js.