Add version & license info in .htaccess / main.css

Make it easier for people to know what version of the `.htaccess`
and `main.css` files they are using and under what license these
are provided, by adding this information within the files.

This is useful primarily when developers only copy these files from
the HTML5 Boilerplate project, forget to update their project's change
log or simply do not use anything similar to a change log.

Fix h5bp/html5-boilerplate#1424.

.htaccess

@@ -1,4 +1,4 @@
-# Apache Configuration File
+# Apache Server Configs v1.1.0 | MIT License
 # https://github.com/h5bp/server-configs-apache
 
 # (!) Using `.htaccess` files slows down Apache, therefore, if you have access

css/main.css

@@ -1,6 +1,6 @@
+/*! HTML5 Boilerplate v4.3.0 | MIT License | http://h5bp.com/ */
+
 /*
- * HTML5 Boilerplate
- *
  * What follows is the result of much research on cross-browser styling.
  * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
  * Kroc Camen, and the H5BP dev community and team.