implement omaha response parsing

Author: wrl

.gitignore

@@ -1 +1,2 @@
 /target
+/omaha/target

omaha/Cargo.lock

@@ -3,3 +3,6 @@ pub use self::uuid::*;
 
 pub mod request;
 pub use request::Request;
+
+pub mod response;
+pub use response::Response;

omaha/src/lib.rs

@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 use std::fmt;
 
-use hard_xml::{XmlWrite};
+use hard_xml::XmlWrite;
 
 use crate as omaha;