matcher: fixed status file, formatting, tweaks to readme

lib/src/throws_matcher.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library matcher.throws_matcher;
 
 import 'dart:async';
 
 import 'expect.dart';
 import 'interfaces.dart';
@@ skipping 75 matching lines @@
   }
 
   Description describe(Description description) {
     if (_matcher == null) {
       return description.add("throws");
     } else {
       return description.add('throws ').addDescriptionOf(_matcher);
     }
   }
 
-  Description describeMismatch(item, Description mismatchDescription,
-                               Map matchState,
-                               bool verbose) {
+  Description describeMismatch(
+      item, Description mismatchDescription, Map matchState, bool verbose) {
     if (item is! Function && item is! Future) {
       return mismatchDescription.add('is not a Function or Future');
     } else if (_matcher == null || matchState['exception'] == null) {
       return mismatchDescription.add('did not throw');
     } else {
-      mismatchDescription. add('threw ').
-          addDescriptionOf(matchState['exception']);
+      mismatchDescription
+          .add('threw ')
+          .addDescriptionOf(matchState['exception']);
       if (verbose) {
         mismatchDescription.add(' at ').add(matchState['stack'].toString());
       }
       return mismatchDescription;
     }
   }
 }
-