Updated contact information and other errata.

CONTRIBUTORS

@@ -5,6 +5,6 @@ handle was replaced by a real name. There is no significance to the order.
 
 Thanks to:
 
-Gottlob Frege
+Tony Van Eerd
 Ben Alex
 SlashLife (freenode)

README.md

@@ -88,8 +88,11 @@ struct triplet {
 ## Contact
 
 Don't hesitate to contact me about features or bugs:
-[antonbachin@yahoo.com](mailto:antonbachin@yahoo.com), or open an issue on
-GitHub.
+[antonbachin@yahoo.com][email], Twitter [@better_enums][twitter], or open an
+issue on GitHub.
+
+[email]:   mailto:antonbachin@yahoo.com
+[twitter]: https://twitter.com/better_enums
 
 ## License and history
 

doc/Contact.md

@@ -1,6 +1,7 @@
 ## Contact
 
 - Send me an email: [antonbachin@yahoo.com](mailto:antonbachin@yahoo.com).
+- Twitter: [@better_enums](https://twitter.com/better_enums).
 - Visit the [GitHub]($repo) project to open an issue or get a development
   version.
 

doc/index.md

@@ -57,6 +57,9 @@ Channel     c = <em>Channel::_from_integral(3)</em>;
 <em>constexpr</em> Channel c = <em>Channel::_from_string("Blue")</em>;</pre>
 </div>
 
+Jump to the [tutorial](${prefix}tutorial/HelloWorld.html) to see a complete
+working example.
+
 ### What do you get?
 
 <ul class="blurbs">