add default icon

SimDirs/Images.xcassets/defaultIcon.imageset/Contents.json

@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x",
+      "filename" : "defaultIcon.png"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x",
+      "filename" : "defaultIcon@2x.png"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

SimDirs/Info.plist

@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.4</string>
+	<string>0.4.1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

SimDirs/QSSimAppInfo.m

@@ -129,6 +129,10 @@
 			}
 		}
 	}
+	
+	if (self.appIcon == nil) {
+		self.appIcon = [NSImage imageNamed: @"defaultIcon"];
+	}
 }
 
 - (NSImage *) imageAtURL: (NSURL *) inImageURL