Allowing template variables in Battery's -O and -o args

Should address github issue #109.  Thanks to Todd Lunter for the
suggestion.

1 files changed, 10 insertions, 0 deletions

diff --git a/readme.md b/readme.md
index 013f9d6..6055f56 100644
--- a/readme.md
+++ b/readme.md
@@ -764,6 +764,16 @@ something like:
   neither the generic nor the specific options have any effect on
   `<timeleft>`.
 
+  It is also possible to specify template variables in the `-O` and
+  `-o` switches, as in the following example:
+
+         Run BatteryP ["BAT0"]
+                      ["-t", "<acstatus>"
+                      , "-L", "10", "-H", "80"
+                      , "-l", "red", "-h", "green"
+                      , "--", "-O", "Charging", "-o", "Battery: <left>%"
+                      ] 10
+
 ### `TopProc Args RefreshRate`
 
 - Aliases to `top`