Avoid empty logging

- Avoid useless empty logging when stdout/stderr is empty. Using gutil.log instead of console.log.
- Formatting code

index.js

@@ -10,31 +10,31 @@ module.exports = function (options) {
     var targetFile = nugetPath;
     var cmdArgs = ["restore"];
 
-    if(options){
+    if (options) {
         nugetPath = options.nugetPath || nugetPath;
         monoPath = options.monoPath || monoPath;
-        if(options.additionalArgs && options.additionalArgs.length > 0){
+        if (options.additionalArgs && options.additionalArgs.length > 0) {
             cmdArgs = cmdArgs.concat(options.additionalArgs);
         }
     }
-     if(monoPath && monoPath.length > 0){
+    if (monoPath && monoPath.length > 0) {
         targetFile = monoPath;
         cmdArgs.unshift(nugetPath);
     }
+
     return through.obj(function (file, enc, cb) {
         if (!file || !file.path) {
             cb(null, file);
             return;
         }
         cmdArgs.push(file.path);
-        return execFile(targetFile, cmdArgs, function(error, stdout, stderror){
-             console.log(stdout);
-            console.log(stderror);
+        return execFile(targetFile, cmdArgs, function (error, stdout, stderror) {
+            if (stdout.trim()) gutil.log(stdout);
+            if (stderror.trim()) gutil.log(stderror);
             if (error) {
                 throw error;
             }
             cb(null, file);
         });
-
     });
 };