Format simple imports

src/imports.rs

@@ -37,8 +37,14 @@ impl Rewrite for ast::ViewPath {
                 // FIXME convert to list?
                 None
             }
-            ast::ViewPath_::ViewPathSimple(_,_) => {
-                None
+            ast::ViewPath_::ViewPathSimple(ident, ref path) => {
+                let path_str = pprust::path_to_string(path);
+
+                Some(if path.segments.last().unwrap().identifier == ident {
+                         path_str
+                     } else {
+                         format!("{} as {}", path_str, ident)
+                     })
             }
         }
     }

tests/source/imports.rs

@@ -39,3 +39,8 @@ fn test() {
 use Baz::*;
         use Qux;
 }
+
+// Simple imports
+use  foo::bar::baz as baz ;
+use bar::quux  as    kaas;
+use  foo;

tests/target/imports.rs

@@ -32,3 +32,8 @@ fn test() {
     use Baz::*;
     use Qux;
 }
+
+// Simple imports
+use foo::bar::baz;
+use bar::quux as kaas;
+use foo;