Added DecodeQr Module, Test

src/modules/DecodeQr/Module.js

@@ -0,0 +1,29 @@
+/*
+ * Decodes QR from a given image.
+ */
+module.exports = function DoNothing(options) {
+  options = options || {};
+  options.title = "Decode QR Code";
+  var output;
+  var jsQR = require('jsqr');
+  var getPixels = require('get-pixels');
+
+  function draw(input,callback) {
+    var this_ = this;
+    getPixels(input.src,function(err,pixels){
+      if(err) throw err;
+      var w = pixels.shape[0];
+      var h = pixels.shape[1];
+      var decoded = jsQR.decodeQRFromImage(pixels.data,w,h);
+      this_.output = input;
+      this_.output.data = decoded;
+      callback();
+    });
+  }
+
+  return {
+    options: options,
+    draw: draw,
+    output: output
+  }
+}