[polymer] update pubspecs to prepare for -pre.0 release

R=sigmund@google.com

Review URL: https://codereview.chromium.org//180213007

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33178 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index 87bc727..16ac516 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,8 +1,8 @@
 name: browser
-version: 0.10.0-dev
-authors: ["Dart Team <misc@dartlang.org>"]
+version: 0.10.0
+authors: "Dart Team <misc@dartlang.org>"
 homepage: http://www.dartlang.org
 description: >
  The bootstrap dart.js script for Dart apps running in the browser.
 environment:
-  sdk: ">=1.2.0-dev.6.0 <2.0.0"
+  sdk: ">=1.2.0 <2.0.0"