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.

1985/august/README.md

@@ -9,7 +9,7 @@ Lennart Augustsson\
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./august

1985/lycklama/README.md

@@ -17,7 +17,7 @@ make lycklama.orig
 ```
 
 
-## To run:
+## To use:
 
 ```sh
 ./lycklama.alt < some_file

1985/sicherman/README.md

@@ -39,7 +39,7 @@ a compiler you can try this version.
 make alt
 ```
 
-#### To run:
+#### To use:
 
 ```sh
 ./sicherman.alt < file