#80 updated developer build info

Developer.md

@@ -4,10 +4,14 @@ Building from source code
 ===================
 
 1. Open the project in Xcode (double click src/EMUUSBAudio.xcodeproj)
-2. Select Product/Build menu item
-3. Select View/Navigators/Project Navigator menu item
-4. right click on the  EMUUSBAudio.kext and click "Show in finder"
-5. Copy the kext into the directory where the kextInstall script is
+2. Set up the build settings: select the project (the blue EMUUSBAudio icon in top left) and select the "Build Settings" tab
+ * select "OSX 10.9" or "OSX 10.11" in the Architectures/Base SDK
+ * select the same in the Deployment/InOSX Deployment target
+ * in the Packaging/Info.plist file set "EMUUSBAudio/EMUUSBAudio-Info.plist" if you selected 10.9, or "EMUUSBAudio/EMUUSBAudio-Info-11.plist" if you selected 10.11.
+3. Select Product/Build menu item
+4. Select View/Navigators/Project Navigator menu item
+5. right click on the  EMUUSBAudio.kext and click "Show in finder"
+6. Copy the kext into the directory where the kextInstall script is
 
 After that the kExtInstall script is ready for use (see Installation)