readme and content update

README.md - marked layout front-matter as optional
src/about.md - made slightly less flippant, added 'todo.'
src/index.md - consolidated a bit, added 'technical goals.'

src/about.md

@@ -1,10 +1,11 @@
 ---
 title: About
-description: Who is this ety?
-layout: layouts/base.njk
+description: Who is this “ety”?
 permalink: /about/
 ---
 
 # About
 
-Yeaaaah. You're in the right place.
+Yep, that’s me. You’re probably wondering how I got here.
+
+(We’ll revisit this… in time.)