Add README

README.org

@@ -1,25 +1,24 @@
 * Talks
 
-This repository contains slides and example code from two technical presentations given in 2020.
+Slides and example code from two technical presentations given in 2020.
 
 Slides use [[https://orgmode.org/][org-mode,]] and were presented in Emacs with [[https://github.com/rlister/org-present][org-present]].
 
-** [[file:concurrency/][Concurrency]] (June 2020)
+** Concurrency (June 2020)
 
 Introduction to concurrency.
 
-** Slides
+*** Slides
 - Sequential vs. concurrent execution, I/O latency, interrupts, and cooperative vs. preemptive scheduling
 - Concurrency vs. parallelism, processes vs. threads, and language runtimes (C, JavaScript event loop, Go scheduler)
 - Shared memory synchronization vs. message passing, backpressure, and distributed data races
 
-** Examples
+*** Examples
 - temperatures: concurrent HTTP requests fetching city temperatures from OpenWeatherMap.
 - mutex: data race demonstration and mutual exclusion on a shared bank account balance (~go run -race ./main.go~).
 - csp: pipeline of goroutines and channels reading a CSV of zip codes, querying weather data with a concurrency limiter, and displaying a live top-ten leaderboard.
 
-*** Running Go examples
-
+To run the examples:
 #+begin_src shell
 # Mutex example (with and without race detector):
 cd concurrency/cmd/mutex
@@ -32,7 +31,7 @@ cd concurrency/cmd/temperatures && go run .
 cd concurrency/cmd/csp && go run .
 #+end_src
 
-** [[file:x86-assembly/][x86 Assembly]] (November 2020)
+** x86-64 Assembly (November 2020)
 
 A brief tour of x86-64 assembly on Linux.
 
@@ -50,8 +49,7 @@ A brief tour of x86-64 assembly on Linux.
 - stack: pushing bytes onto the stack and printing from ~%rsp~.
 - func: function call, stack frame setup (~%rbp~ / ~%rsp~), and return.
 
-*** Running x86-64 examples
-
+To run the examples:
 #+begin_src shell
 as exit.s -o exit.o
 ld exit.o -o exit