make max count configureable and add info to help

bin/nightscout.sh

@@ -124,13 +124,14 @@ openaps use ns shell upload treatments.json recently/combined-treatments.json
                                                  search query for Nightscout.
   oref0_glucose_without_zone [args]              Like oref0_glucose but without
                                                  rezoning.
-  oref0_glucose_since expr [tz]                  Get records matching oref0
+  oref0_glucose_since expr [tz] [count]          Get records matching oref0
                                                  requirements filtered by a date calculated by expr
                                                  from Nightscout.
+                                                 expr is used with date -d, for example -6hours.
                                                  tz should be the name of the
                                                  timezones device (default with
                                                  no args is tz).
-                                                 expr is used with date -d, for example -6hours.
+                                                 count is the max count (needed to overide NS default of 10).
   upload endpoint file                           Upload a file to the Nightscout endpoint.
   latest-treatment-time                          - get latest treatment time from Nightscout
   format-recent-history-treatments history model - Formats medtronic pump
@@ -266,7 +267,8 @@ ns)
     oref0_glucose_since)
     expr=$1
     zone=${2-'tz'}
-    exec ns-get host $NIGHTSCOUT_HOST entries/sgv.json "find[date][\$gte]=$(date -d $expr +"%s%3N")&count=5000" \
+    count=${3-1000}
+    exec ns-get host $NIGHTSCOUT_HOST entries/sgv.json "find[date][\$gte]=$(date -d $expr +"%s%3N")&count=$count" \
       | json -e "this.glucose = this.sgv" \
       | openaps use $zone rezone --astimezone --date dateString -
     ;;