bigtable 0.4.0

#[derive(Clone)]
pub struct Project {
    pub name: String
}

impl Default for Project {
    fn default() -> Self {
        Project { name: String::from("rustbigtable") }
    }
}

#[derive(Clone)]
pub struct Instance {
    pub project: Project,
    pub name: String
}

impl Default for Instance {
    fn default() -> Self {
        Instance { name: String::from("test-inst"), project: Default::default() }
    }
}

#[derive(Clone)]
pub struct Table {
    pub instance: Instance,
    pub name: String
}

impl Default for Table {
    fn default() -> Self {
        Table { name: String::from("my-table"), instance: Default::default() }
    }
}