Add error module, result module

libimagentryedit/src/error.rs

@@ -0,0 +1,10 @@
+generate_error_module!(
+    generate_error_types!(EditError, EditErrorKind,
+        IOError             => "IO Error"
+    );
+);
+
+pub use self::error::EditError;
+pub use self::error::EditErrorKind;
+pub use self::error::MapErrInto;
+

libimagentryedit/src/lib.rs

@@ -4,3 +4,5 @@ extern crate libimagrt;
 extern crate tempfile;
 
 pub mod edit;
+pub mod error;
+pub mod result;

libimagentryedit/src/result.rs

@@ -0,0 +1,6 @@
+use std::result::Result as RResult;
+
+use error::EditError;
+
+pub type Result<T> = RResult<T, EditError>;
+