update readme so integrations included for windows

Author: vkovec

README.md

@@ -51,5 +51,5 @@ set PACKAGE_VERSION=0.0.5a
 set FBXSDK_PACKAGE_PATH=/path/to/FbxSdk.unitypackage
 
 %UNITY3D_PATH% -projectPath "%PROJECT_PATH%" -importPackage %FBXSDK_PACKAGE_PATH% -quit
-%UNITY3D_PATH% -batchmode -projectPath "%PROJECT_PATH%" -exportPackage Assets/FbxExporters Assets/FbxSdk %PROJECT_PATH%/%PACKAGE_NAME%_%PACKAGE_VERSION%.unitypackage -quit
+%UNITY3D_PATH% -batchmode -projectPath "%PROJECT_PATH%" -exportPackage Assets/FbxExporters Assets/FbxSdk Assets/Integrations %PROJECT_PATH%/%PACKAGE_NAME%_%PACKAGE_VERSION%.unitypackage -quit
 ```