UPDATE: Add node bindings

bindings/nodejs/README.md

@@ -0,0 +1,18 @@
+# IronCalc nodejs bindingds
+
+
+Example usage:
+
+```javascript
+import { Model } from '@ironcalc/wasm';
+ 
+const model = new Model("Workbook1", "en", "UTC");
+
+model.setUserInput(0, 1, 1, "=1+1");
+const result1 = model.getFormattedCellValue(0, 1, 1);
+
+console.log('Cell value', result1);
+
+let result2 = model.getCellStyle(0, 1, 1);
+console.log('Cell style', result2);
+```