Makes image greyscale, then sets all pixels brighter than <value> (range 0-255) to white, and all pixels darker than <value> to black

URL
http://api.imgble.com/threshold|<value>/http://mydomain.com/myimage.jpg

Parameters
<value> range 0-255

Example
http://api.imgble.com/threshold|100/http://farm1.static.flickr.com/57/197881059_aeb724b1cf.jpg

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