use default browser to open

Author: 1-Bart-1

examples/menu.jl

@@ -4,12 +4,18 @@ using REPL.TerminalMenus
 
 url = "https://albatross-kite-transport.github.io/VortexStepMethod.jl/dev"
 
+help_command = if Sys.iswindows()
+    "run(`cmd /c start $url`)"
+else
+    "run(`xdg-open $url`)"
+end
+
 options = ["rectangular_wing = include(\"rectangular_wing.jl\")",
            "ram_air_kite = include(\"ram_air_kite.jl\")",
            "stall_model = include(\"stall_model.jl\")",
            "bench = include(\"bench.jl\")",
            "cleanup = include(\"cleanup.jl\")",
-           "help = run(`firefox $url`)",
+           "help = $help_command",
            "quit"]
 
 function example_menu()