[icfp] outlined experience section

icfp-2016/experience.scrbl

@@ -1,6 +1,16 @@
 #lang scribble/sigplan
 
-@title{Experience}
+@title[#:tag "sec:experience"]{Experience}
 
 @; compile times, running times, binary size
 @; LOC reduction, bugs caught
+
+We used the library to simplify @todo{lines} of database code and @todo{lines}
+ of vector code.
+Performance of the vector code improved by @todo{xxx}, a nice bonus.
+
+@todo{figure} gives microbenchmarking results for printf, regexp, and vector-@todo{}.
+Have compile-time, executable size, and run-time.
+Things look okay.
+We don't bother trying to quantify the bug-catching utility.
+