shafile

async sha file.

i got tired of writing this in different places.

 
var shafile = require('shafile')';
 
shafile('/path/to/file',function(err,shasumhex){
  console.log(shasumhex);
  // prints something like 691e7f544180e5e8fd5f66e33d81ce029ed32d8a
});