Updated Speed (markdown)

Speed.md

@@ -1,7 +1,22 @@
-Speed is extremely important and is something Zim takes pride in. Many users of Zsh frameworks complain of the slowness in gaining an interactive session. Below is a load-time comparison of many popular frameworks. 
+Speed is important and is something Zim takes pride in. Many users of Zsh frameworks complain of the slowness in gaining an interactive session. Below is a load-time comparison of many popular frameworks. 
 
-The tests were done with almost the exact same modules/plugins. Each load-time test was run 100 times to get the best possible results. The tests were run with `for i in {1..100}; do time zsh -lic 'exit'; done`. The script that generated these results can be found [here](https://github.com/zimfw/zsh-framework-benchmark).
+The tests were done with almost the exact same modules/plugins. The default configurations for each framework are changed only slightly from their default. This is to match feature-parity against the baseline, Zim. Each load-time test was run 100 times to get the best possible results. The tests were run with the [expect](https://core.tcl-lang.org/expect/index) script below, that measures the time until the first prompt appearance.
 
-The default configurations for each framework are changed only slightly from their default. This is to match feature-parity against the baseline, Zim.
+```tcl
+#!/usr/bin/expect -f
+
+set wd [file tail [pwd]]
+set c0 [clock microseconds]
+spawn -noecho zsh -li
+expect {
+  -re {\e]([07]|1337);[^\a]*\a} { exp_continue } ; # match escape sequences to be ignored
+  $wd { send_error "[expr [clock microseconds] - $c0]\n" } ; # match working dir at prompt
+  timeout { exit 1 }
+}
+sleep 1
+send "exit\r"
+```
+
+The script that generated these results can be found [here](https://github.com/zimfw/zsh-framework-benchmark).
 
 ![Zsh frameworks benchmark](https://zimfw.github.io/images/results.svg)