Update to allow swipe to close

[ljknight]

This plugin has been great, we've been using it at my company for a mobile web app. One usability feature that we felt was missing was the ability to swipe to close, instead of only the tap. Hope this works - thanks for your work on this.

[coveralls]

Changes Unknown when pulling 544529f on ljknight:swipe-close into * on react-component:master*.

[ljknight]

@silentcloud - based on how these tests are failing it seems like you intentionally set up the swipe to only swipe right or left. Is it ok to have it swipe both ways, or do you think it should be passed in as an option?

[silentcloud]

@ljknight when left=[] or right=[] , swipe to direction will trigger open() function;

for example:

<Swipe left=[{...}, {...}] onOpen={() => {}} />

when swipe to left direction, open() will be triggered，in fact it should not be triggered

[ljknight]

@silentcloud thanks for the reply - I'm not sure I understand what you mean

[silentcloud]

[ljknight]

@silentcloud - added an update that won't pass the linter, but it fixes the issue my initial commit didn't take into consideration. let me know what you think.

[coveralls]

Changes Unknown when pulling 1416daf on ljknight:swipe-close into * on react-component:master*.

[silentcloud]

allow swipe to close: 78a5fe1