added startup file

src/startup.lua

@@ -0,0 +1,21 @@
+-- Check for startup enable flag 
+if redstone.getInput("top") then
+    local fd = fs.open("/haxe.lua", "r")
+    local haxe = fd.readAll()
+    fd.close()
+
+    local make = dofile("rom/modules/main/cc/require.lua").make
+
+    local env = {}
+    env.require, env.package = make(env, "/")
+    env = setmetatable(env, { __index = _G })
+
+    local f,err = load(haxe,"Haxe",nil,env)
+
+    if err then
+        print("Error loading Haxe: " .. err)
+    else
+        f()
+        os.reboot()
+    end
+end