add freeze option

README.md

@@ -154,6 +154,9 @@ new Vue({
       // Optionally we can watch the parameters for changes in nested
       // objects using the 'deep' option
       deep: true,
+      // Optionally we can decide whether to freeze data
+      // using the 'freeze' option
+      freeze: true,
       //// Meteor Reactivity
       // This will be refresh each time above params changes from Vue
       // Then it calls Tracker.autorun() to refresh the result

src/vue-plugin.js

@@ -119,7 +119,7 @@ export default {
                     if (result && typeof result.fetch === 'function') {
                       result = result.fetch();
                     }
-                    if(Vue.config.meteor.freeze) {
+                    if(options.freeze === true || Vue.config.meteor.freeze && options.freeze === undefined) {
                       result = Object.freeze(result);
                     }
                     this[key] = result;