[package.json] added @thejh

package.json

@@ -2,6 +2,7 @@
 , "description" : 
   "SAX based evented streaming JSON parser in JavaScript (browser and node)"
 , "author"      : "Nuno Job <nunojobpinto@gmail.com> (http://nunojob.com/)"
+, "contributors": [ "Jann Horn (https://github.com/thejh)" ]
 , "version"     : "0.5.6"
 , "main"        : "./clarinet.js"
 , "homepage"    : "https://github.com/dscape/clarinet"