使用grunt js来缩小和连接没有* .con.js文件

I've been using grunt.js to concatenate and then minify javascript files. The way I've been accomplishing this task leaves me with an extra script.con.js file (the concatenated file). I don't find it really necessary other than staging a concatenated file to minify. What am I missing in my example below?I've been using grunt.js to concatenate and the