adding option loopcls

src/docs/USAGE.md

@@ -27,6 +27,7 @@ Takes an input, usually a data structure such as json, and transforms it to an e
 | pause  | If 'true' will try to pause contents in alternative to _less -r_ |
 | color  | If 'true' will force colored output if available |
 | loop   | If defined will loop the processing by the number of seconds provided |
+| loopcls | If 'true' and loop is defined it will clear the screen on each loop cycle |
 | -v     | Changes the input to a map with the tool's version info |
 | version | Alternative way to change the input to a map with the tool's version |
 

src/oafp.source.js.hbs

@@ -425,6 +425,7 @@ if (isDef(params["-debug"])) {
 
 if (isNumber(params.loop)) {
     while(1) {
+        if (toBoolean(params.loopcls)) cls()
         _run()
         sleep(params.loop * 1000, true)
     }