Support for specifying an output directory (issue #106)

lib/src/options.dart

Index: lib/src/options.dart
diff --git a/lib/src/options.dart b/lib/src/options.dart
index 4f3e30fbfa3e13c12c2b429e04c3abc754575f0c..a2174a35b041f7723f7d1c1e6b20cceda4bd2f42 100644
--- a/lib/src/options.dart
+++ b/lib/src/options.dart
@@ -26,7 +26,7 @@ class CompilerOptions {
     : warningsAsErrors = args['warnings_as_errors'],
       verbose = args['verbose'],
       clean = args['clean'],
-      useColors = !args['colors'],
+      useColors = args['colors'],
       rest = args.rest;
 
   static CompilerOptions parse(List<String> arguments) {