as given on the launchpad page here
These builds of gvfs have my native mtp backend backported from gvfs master. Use this to easily access MTP based devices with Nautilus. 13.10 (Saucy) and newer versions of Ubuntu contain all of these changes, so you don't need to use this ppa any more.
i'm using ubuntu 12.10 ,so I decided to install this package.
so i first added the repository.
aditya@aditya-desktop:~$ sudo add-apt-repository ppa:langdalepl/gvfs-mtp
sudo apt-get update
But i don't know what and how to install to get that package
please tell me.