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.

1995/cdua/README.md

@@ -19,7 +19,7 @@ how fast your computer is :-) (and you can also use both to see the difference).
 For this alternate, slower version, please see below.
 
 
-## To run:
+## To use:
 
 ```sh
 ./cdua

1995/dodsond1/README.md

@@ -12,7 +12,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./dodsond1 < text_file

1995/dodsond2/README.md

@@ -9,7 +9,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./dodsond2

1995/esde/README.md

@@ -11,7 +11,7 @@ Poland
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./esde data-file word

1995/garry/README.md

@@ -12,7 +12,7 @@ make all
 ```
 
 
-## To run:
+## To use:
 
 ```sh
 ./garry <input_file >output_file

1995/heathbar/README.md

@@ -12,7 +12,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./heathbar num num

1995/leo/README.md

@@ -11,7 +11,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./leo [ deep ] [ right ] [ Variable ] [ cycle [ freq ] ]

1995/makarios/README.md

@@ -12,7 +12,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./makarios

1995/savastio/README.md

@@ -12,7 +12,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./savastio

1995/schnitzi/README.md

@@ -14,7 +14,7 @@ US\
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./schnitzi num

1995/spinellis/README.md

@@ -11,7 +11,7 @@ Mastodon: <https://mstdn.social/@DSpinellis>
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./spinellis < spinellis.c

1995/vanschnitz/README.md

@@ -13,7 +13,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./vanschnitz