doc(readme): no longer use newXxx but Xxx for class

Author: litlighilit

README.md

@@ -220,9 +220,11 @@ class Example(object):  # Mimic simple Python "classes".
     self.stop = argument
     return self.stop
 
-# Oop, the following is no longer Python....
-let e = newExample(5, 3)
-print(e.stopit(5))
+def exa():
+  e = Example(5, 3)
+  print(e.stopit(5))
+
+exa()
 ```
 
 Nimpylib heavily relies on Nim generics, converters, operator overloading, and even on concepts.

examples/readme.nim

@@ -164,6 +164,8 @@ class Example(object):  # Mimic simple Python "classes".
     self.stop = argument
     return self.stop
 
-# Oop, the following is no longer Python....
-let e = newExample(5, 3)
-print(e.stopit(5))
+def exa():
+  e = Example(5, 3)
+  print(e.stopit(5))
+
+exa()

src/pylib/pysugar/stmt/class.nim

@@ -74,7 +74,7 @@ proc replaceSuperCall(n: var NimNode, defSupCls: NimNode, methKind: MethKind): b
 
   result = true
 
-template new*[T; R: RootRef](_: typedesc[R], cls: typedesc[T],
+template new*[T; R: ref](_: typedesc[R], cls: typedesc[T],
     _: varargs[untyped]): typedesc[T] =
   ## py's `object.__new__`
   cls