fix(base): handle router base path

when provided, the router base path will be added to the current router path

closes #68

src/config.js

@@ -15,7 +15,8 @@ const defaultConfig = {
     transformQueryString: true,
     pageviewOnLoad: true,
     pageviewTemplate: null,
-    untracked: true
+    untracked: true,
+    prependBase: true
   },
 
   debug: {

src/helpers.js

@@ -17,6 +17,17 @@ export function loadScript (url) {
   })
 }
 
+export function getBasePath (base, path) {
+  const pathAsArray = path.split('/')
+  const baseAsArray = base.split('/')
+
+  if (pathAsArray[0] === '' && base[base.length - 1] === '/') {
+    pathAsArray.shift()
+  }
+
+  return baseAsArray.join('/') + pathAsArray.join('/')
+}
+
 export function merge (obj, src) {
   Object.keys(src).forEach(function (key) {
     if (obj[key] && typeof obj[key] === 'object') {

src/lib/page.js

@@ -7,7 +7,8 @@ import {
   isRouteIgnored,
   getRouteAnalytics,
   isRoute,
-  isRouter
+  isRouter,
+  getBasePath
 } from '../helpers'
 
 export default function page (...args) {
@@ -22,9 +23,19 @@ export default function page (...args) {
   }
 
   if (route) {
-    const { transformQueryString } = config.autoTracking
+    const {
+      router,
+      autoTracking: {
+        transformQueryString, 
+        prependBase
+      } 
+    } = config
+
     const queryString = getQueryString(route.query)
-    const path = route.path + (transformQueryString ? queryString : '')
+    const needsBase = prependBase && router.options.base
+
+    let path = route.path + (transformQueryString ? queryString : '')
+    path = needsBase ? getBasePath(router.options.base, path) : path
 
     set('page', path)