Change 'To run' to 'To use' in all README.md files

As in:

    sgit -e 's/# To run/# To use/g' '*README.md'

This makes consistent the message for how to use the program. 'How to
use' was chosen because one can run a program just by doing './foo' but
that doesn't imply that's how to use it but the purpose of the section
is how to use it.

2014/birken/README.md

@@ -14,7 +14,7 @@ Alexander Prishchepov\
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog < some_secret_or_something
@@ -71,7 +71,7 @@ a client-side downloader.  The hidden transmitted data cannot be reconstructed
 or even detected from the binary content of the traffic between the client and
 the server.
 
-## To run web server
+## To use web server
 
 ```sh
 ./prog < secret_file_to_be_downloaded
@@ -83,7 +83,7 @@ Try using the program's source code as the secret file:
 ./prog < prog.c
 ```
 
-## To run client-side downloader
+## To use client-side downloader
 
 ```sh
 ./prog http://host[:port]

2014/deak/README.md

@@ -12,7 +12,7 @@ make
 There is an alternate version that the author provided but fixed in 2023 to
 compile. See [alternate code](#alternate-code) below.
 
-## To run:
+## To use:
 
 ```sh
 ./prog

2014/endoh1/README.md

@@ -11,7 +11,7 @@ Mastodon: [@mame@ruby.social](https://ruby.social/@mame)
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog > foo.c

2014/endoh2/README.md

@@ -11,7 +11,7 @@ Mastodon: [@mame@ruby.social](https://ruby.social/@mame)
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog < input > output

2014/maffiodo1/README.md

@@ -15,7 +15,7 @@ make
 ```
 
 
-## To run:
+## To use:
 
 ```sh
 cat mario.level | ./prog 320 200 800 300 128 144 mario.rgba mario8.wav 10343679

2014/maffiodo2/README.md

@@ -10,7 +10,7 @@
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog arg

2014/morgan/README.md

@@ -9,7 +9,7 @@
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog [arg ..]

2014/sinon/README.md

@@ -10,7 +10,7 @@
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 cp -f sinon.c run.c; ./hecate.sh

2014/skeggs/README.md

@@ -10,7 +10,7 @@
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog

2014/vik/README.md

@@ -13,7 +13,7 @@ US\
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog > foo.c

2014/wiedijk/README.md

@@ -9,7 +9,7 @@
 make
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./prog