[examples/*] Update to new constructor call syntax.

examples/basicmenu.lua

@@ -40,7 +40,7 @@ local function makeMainMenu()
         guiStatus.previous = "So you left \""..w.text.."\"..."
     end
 
-    return Ui.new {
+    return Ui:new {
         x = x, y = y,  -- Place UI at the calculated spot
 
         -- Place the elements in rows from top to bottom

examples/helloworld.lua

@@ -23,7 +23,7 @@ function love.load()
     local W, H = 400, 80  -- pick arbitrary UI size
     local x, y = centerRectOnScreen(W, H)
 
-    gui = Ui.new {
+    gui = Ui:new {
         x = x, y = y,
 
         Rows {

examples/init.lua

@@ -58,7 +58,7 @@ local function makeSelectionMenu()
     local x = math.floor(love.graphics.getWidth() - W) / 2
     local y = math.floor(love.graphics.getHeight() - RH * #menu) / 2
 
-    return Ui.new {
+    return Ui:new {
         x = x, y = y,
         menu
     }

examples/optionsmenu.lua

@@ -90,7 +90,7 @@ local function makeOptionsMenu()
     local config = dummySave.load()
 
     -- Make configuration editable via UI
-    return Ui.new {
+    return Ui:new {
         x = x, y = y,
 
         Rows {