fixes #187, implicit html, as well as server messages not printing

lib/src/options.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.
 
 /// Set of flags and options passed to the compiler
 library dev_compiler.src.options;
 
 import 'dart:io';
 
 import 'package:args/args.dart';
@@ skipping 242 matching lines @@
 }
 
 /// Parses options from the command-line
 CompilerOptions parseOptions(List<String> argv) {
   ArgResults args = argParser.parse(argv);
   var serverMode = args['server'];
   var enableHashing = args['hashing'];
   if (enableHashing == null) {
     enableHashing = serverMode;
   }
+  // TODO(jmesserly): shouldn't level always default to warning?

[vsm, 2015/05/19 20:41:08]

Eventually, yes.  I bumped this up as I didn't want to overwhelm our initial
users. 

   var logLevel = serverMode ? Level.WARNING : Level.SEVERE;
   var levelName = args['log'];
   if (levelName != null) {
     levelName = levelName.toUpperCase();
     logLevel = Level.LEVELS.firstWhere((l) => l.name == levelName,
         orElse: () => logLevel);
   }
   var useColors = stdioType(stdout) == StdioType.TERMINAL;
   var sdkPath = args['dart-sdk'];
   if (sdkPath == null && !args['mock-sdk']) {
@@ skipping 173 matching lines @@
     // The pub-cache directory is two levels up, but we verify that the layout
     // looks correct.
     if (path.basename(dir) != 'dev_compiler') return null;
     dir = path.dirname(dir);
     if (path.basename(dir) != 'global_packages') return null;
     dir = path.dirname(dir);
     return path.join(dir, cacheDir, 'lib', 'runtime');
   }
   return null;
 }