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.

1992/albert/README.md

@@ -12,7 +12,7 @@ The Netherlands
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./albert number

1992/ant/README.md

@@ -13,7 +13,7 @@ Canada
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./am Makefile

1992/buzzard.1/README.md

@@ -13,7 +13,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./buzzard.1 num num

1992/buzzard.2/README.md

@@ -12,7 +12,7 @@ US
 make all
 ```
 
-## To run:
+## To use:
 
 First:
 

1992/gson/README.md

@@ -14,7 +14,7 @@ make all
 ```
 
 
-## To run:
+## To use:
 
 ```sh
 ./ag word word2 word3 < /path/to/dictionary

1992/imc/README.md

@@ -14,7 +14,7 @@ England
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 # text mode

1992/lush/README.md

@@ -11,7 +11,7 @@ make all
 ```
 
 
-## To run:
+## To use:
 
 ```sh
 ./runme.sh

1992/marangon/README.md

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

1992/nathan/README.md

@@ -13,7 +13,7 @@ UK BS12 4SQ
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./nathan

1992/vern/README.md

@@ -14,7 +14,7 @@ Berkeley, CA 94720  US
 make all
 ```
 
-## To run:
+## To use:
 
 ```sh
 ./vern 3		# <-- default is 2

1992/westley/README.md

@@ -12,7 +12,7 @@ make all
 ```
 
 
-## To run:
+## To use:
 
 If lost: