I've seen some topics about �How change the titlebar icon?
My solution was as follows:
1. For the first icon(icon before running the game) You need to use a resource editor. See here:
2. For the second icon, follow these steps::
a. Go to project bar.
b. Right click on Files Folder
c. Import a image with the next characteristics(size= 64x64,name= logo.png , format= .png)
d. And end, exporting to Node Webkit and ENJOY! <img src="smileys/smiley36.gif" border="0" align="middle" />
Luck! <img src="smileys/smiley2.gif" border="0" align="middle" />