Ajout d'un n° de version dans package.json.

package.json

 {
   "name": "irstea-ng-model",
-  "description": "Runtime libray for the composer package irstea/ng-model-generator-bundle.",
+  "version": "1.0.0",
+  "description": "Runtime library for the composer package irstea/ng-model-generator-bundle.",
   "types": "dist/index.d.ts",
   "main": "dist/index.js",
   "module": "dist/index.esm.js",
-  "directories": {},
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "prebuild": "rm -rf dist/ && tsc -p ./tsconfig.declaration.json",