Add an example to --time-scale documentation

Author: acaudwell

README.md

@@ -112,6 +112,8 @@ options:
     -c, --time-scale SCALE
             Change simulation time scale.
 
+            E.g. 0.5 for half speed, 2 for double speed.
+
     -i, --file-idle-time SECONDS
             Time in seconds files remain idle before they are removed or 0
             for no limit.

data/gource.1

@@ -93,6 +93,8 @@ Use the time of the last commit if the time of a commit is in the past.
 .TP
 \fB\-c, \-\-time\-scale SCALE\fR
 Change simulation time scale.
+
+E.g. 0.5 for half speed, 2 for double speed.
 .TP
 \fB\-i, \-\-file\-idle\-time SECONDS\fR
 Time in seconds files remain idle before they are removed or 0 for no limit.