only load module git if module is available
only load module git if module is available

dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim,dawnsong/spf13-vim