Published sync_http to pub. Updating README to link to pub page, and incrementing version number.

README.md

Index: README.md
diff --git a/README.md b/README.md
index 95a06d9a5490bee56e2490651e84914e45ef25e5..fa962799d589037d1cb3de97d163d30dbae45055 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@ Dart Synchronous HTTP Client
 ============================
 
 [![Build Status](https://travis-ci.org/dart-lang/sync_http.svg?branch=master)](https://travis-ci.org/dart-lang/sync_http/)
+[![pub package](https://img.shields.io/pub/v/sync_http.svg)](https://pub.dartlang.org/packages/sync_http)
 
 **Important Note:** This package requires the RawSynchronousSocket class to
 work, which should become available in version 1.24 of the Dart SDK. If you
@@ -10,7 +11,7 @@ really want to use this package now, you'll need to use the 1.24-dev SDK.
 A simple Dart HTTP client implemented using RawSynchronousSockets to allow for
 synchronous HTTP requests.
 
-Warning: This library should probably only be used to connect to HTTP servers
+**Warning**: This library should probably only be used to connect to HTTP servers
 that are hosted on 'localhost'. The operations in this library will block the
 calling thread to wait for a response from the HTTP server. The thread can
 process no other events while waiting for the server to respond. As such, this