Update README.md

Update the scoring to reflect the change in 2019 rule

Author: tsaoyu

README.md

@@ -7,9 +7,9 @@ A scoring script reads the GPS coordinates of the boats path, obtained from
 a tracker unit, and compares them with the coordinates defining the challenge.
 The rules define what to check for each challenge.
 
-- [2018 rules](https://www.roboticsailing.org/2018/wp-content/uploads/2018/08/WRSC2018_rules_v1-1.pdf)
+- [2019 rules](https://github.com/WRSC/rules/releases/download/wrsc2019/rule2019.pdf)
   and [rules source repository](https://github.com/WRSC/rules)
-- [2018 GPS coordinates](https://github.com/WRSC/coordinates2018) (coordinates and attempts)
+- [2019 GPS coordinates](https://github.com/WRSC/coordinates2019) (coordinates and attempts)
 - [Competition tracking system](https://github.com/WRSC/tracking)
 
 The scripts work somewhat differently, according to the demands of scoring
@@ -18,13 +18,10 @@ each challenge.
 - `analyse_fleet_race`: takes a single command line argument for a GPS track in
   CSV format, reports when the boat reached each of the markers in the course.
 - `analyse_station_keeping`: takes multiple command line arguments of GPS
-  tracks, reports the 95% position-keeping radius for each, according to the
-  rules. This number then needs to be divided by the boat length as a manual
-  step.
-- `analyse_area_scanning`: single command line argument points to a 'master'
-  CSV file listing the attempts made by boats within a class (e.g.
-  [for micro-sailboats in 2018](https://github.com/WRSC/coordinates2018/blob/ec29ea762e0d4b4e88db21ac0a4b1a06130e5c87/area-scanning/master_micro_sailboat.csv)).
-  Reports points for each attempt.
+  tracks, reports the mean radius for each challenge.
+- `analyse_area_scanning`: single command line argument overview csv master file.
+  Reports points for each team in the same group.
+- `analyse_hide_and_seek`: single command line argument takes the number of seeks. 
 
 To reuse these scripts for another competition, you will need to modify the
 coordinates defining the challenge and the