Update readme

Author: digitalheir

package.json

@@ -1,6 +1,6 @@
 {
   "name": "semiring",
-  "version": "1.2.4",
+  "version": "1.2.5",
   "main": "index.js",
   "types": "index.d.ts",
   "repository": "git@github.com:digitalheir/semiring-js.git",

readme.md

@@ -38,7 +38,7 @@ import {
     BooleanSemiring,
     fromProbabilityToMinusLog as fromProbability,
     toProbabilityFromMinusLog as toProbability,
-    Atom,
+    AtomicValue,
     Bool
 } from "semiring";
 
@@ -65,7 +65,7 @@ const deferrableBooleanSemiring = makeDeferrable(BooleanSemiring);
 const AND = deferrableBooleanSemiring.times;
 const OR = deferrableBooleanSemiring.plus;
 
-const changeMyValue = new Atom(false);
+const changeMyValue = new AtomicValue(false);
 
 const TRUE = Bool.TRUE;
 const FALSE = Bool.FALSE;