Add author meta tag

Author: michaelcarter

src/base.pug

@@ -27,6 +27,7 @@ html(lang="en-GB")
     meta(name='twitter:card' content='summary')
     meta(name='twitter:site' content='@mcarterj')
     meta(name='twitter:creator' content='@mcarterj')
+    meta(name='author' content='Mike Carter')
     meta(name='theme-color' content='#000000')
     meta(name='viewport' content='width=device-width,initial-scale=1,shrink-to-fit=no')
     link(rel='stylesheet' type='text/css' href='/assets/styles/main.css' media='screen')