Changes:
- Remove unnecessary bundle key
- Add a new app_cmd enum value
- Fix the description about aul_launch_app_async API
- Fix a bug on aul_listen_app_launch_signal_v2
Change-Id: I72e44e6d83c00cf3cf769b842006073ec0bc1d41 Signed-off-by: Sangyoon Jang <s89.jang@samsung.com>