Handle String thrown differently

bin/angel.dart

@@ -20,7 +20,11 @@ main(List<String> args) async {
     ..addCommand(new MakeCommand());
 
   return await runner.run(args).then((_) {}).catchError((exc) {
+    if (exc is String) {
+      stdout.writeln(exc);
+    } else {
       stderr.writeln("Oops, something went wrong: $exc");
       exitCode = 1;
+    }
   });
 }

lib/src/commands/init.dart

@@ -113,8 +113,8 @@ class InitCommand extends Command {
         var shouldDelete = prompts.getBool(
             "Directory '${projectDir.absolute.path}' already exists. Overwrite it?");
 
-        if (shouldDelete)
-          throw new Exception("Chose not to overwrite existing directory.");
+        if (!shouldDelete)
+          throw "Chose not to overwrite existing directory.";
         else if (projectDir.absolute.uri.normalizePath().toFilePath() !=
             Directory.current.absolute.uri.normalizePath().toFilePath())
           await projectDir.delete(recursive: true);

lib/src/commands/rename.dart

@@ -58,8 +58,21 @@ class RenameCommand extends Command {
 renamePubspec(Directory dir, String oldName, String newName) async {
 //  var pubspec = await loadPubspec(dir);
   print(cyan.wrap('Renaming your project to `$newName.`'));
-  print(cyan
-      .wrap('Note that this does not actually modify your `pubspec.yaml`.'));
+
+  var pubspecFile = new File.fromUri(dir.uri.resolve('pubspec.yaml'));
+
+  if (await pubspecFile.exists()) {
+    var contents = await pubspecFile.readAsString(), oldContents = contents;
+    contents =
+        contents.replaceAll(new RegExp('name:\\s*$oldName'), 'name: $newName');
+
+    if (contents != oldContents) {
+      await pubspecFile.writeAsString(contents);
+    }
+  }
+
+//  print(cyan
+//      .wrap('Note that this does not actually modify your `pubspec.yaml`.'));
 // TODO: https://github.com/dart-lang/pubspec_parse/issues/17
 //  var newPubspec = new Pubspec.fromJson(pubspec.toJson()..['name'] = newName);
 //  await newPubspec.save(dir);