Get peppier with our welcome message

Author: shana

src/GitHub.VisualStudio.UI/Resources.resx

@@ -379,8 +379,8 @@
     <value>View Pull Request on GitHub</value>
   </data>
   <data name="TeamExplorerWelcomeMessage" xml:space="preserve">
-    <value>Thanks for installing GitHub for Visual Studio. Why not take a look at our [training](show-training) or [documentation](show-docs)?
+    <value>Welcome to GitHub for Visual Studio! Why not take a look at our [training](show-training) or [documentation](show-docs)?
 
 [Don't show this again](dont-show-again)</value>
   </data>
-</root>
+</root>