tokenize filesystem info to standardized dict

[andrewkrug]

For windows and linux friendliness we're going to have to make dicts a standard. Something like
{
"filesystem": {
"mount_point": "/run/shm",
"name": "none",
"size": "1020452",
"used": "0"
"writeable": "true"
}
},
"filesystem": {
"mount_point": "/run/shm",
"name": "none",
"size": "1020452",
"used": "0"
"writeable": "true"
}
}