package.json : ajout d'un script qui empaquette et installe jalhyd

closes #15

package.json

@@ -4,11 +4,12 @@
   "license": "MIT",
   "scripts": {
     "ng": "ng",
-    "start": "ng serve",
+    "start": "ng serve --host 0.0.0.0",
     "build": "ng build",
     "test": "ng test",
     "lint": "ng lint",
-    "e2e": "ng e2e"
+    "e2e": "ng e2e",
+    "jalhyd": "rm -rf node_modules/jalhyd; cd ../jalhyd; npm run package; cd ../nghyd; npm install ../jalhyd/jalhyd-1.0.0.tgz"
   },
   "private": true,
   "dependencies": {