feat(optin): disable and enable methods

see #109

Author: MatteoGabriele

docs/opt-out.md

@@ -48,8 +48,12 @@ It is also possible to disable tracking from everywhere at any time using the `d
 export default {
   methods: {
     disableTracking () {
-      this.$ga.disable(true)
-      // from now on analytics is disabled!
+      this.$ga.disable()
+      // from now on analytics is disabled
+    },
+    enableTracking () {
+      this.$ga.enable()
+      // from now on analytics is enabled
     }
   }
 }

src/lib/index.js

@@ -22,6 +22,7 @@ export default {
   time,
   screenview,
   ecommerce,
-  disable: noga,
+  disable: () => noga(true),
+  enable: () => noga(false),
   commands: config.commands
 }

src/no-ga.js

@@ -1,11 +1,11 @@
 import { getId } from './config'
 
-export default () => {
+export default (disable = true) => {
   if (typeof window === 'undefined') {
     return
   }
 
   getId().forEach(id => {
-    window[`ga-disable-${id}`] = true
+    window[`ga-disable-${id}`] = disable
   })
 }