Improve error message & refactor reserved names

src/inject.js

@@ -2,8 +2,22 @@
   const PREFIX = 'octotree'
       , TOKEN  = 'octotree.github_access_token'
       , SHOWN  = 'octotree.shown'
-      // ugly, I know, can it be improved?
-      , REGEXP = /([^\/]+)\/([^\/]+)(?:\/([^\/]+))?/
+      , REGEXP = /([^\/]+)\/([^\/]+)(?:\/([^\/]+))?/ // (username)/(reponame)/(subpart)
+      , RESERVED_USER_NAMES = [
+          'settings',
+          'organizations',
+          'site',
+          'blog',
+          'about',
+          'orgs',
+          'styleguide',
+          'showcases',
+          'trending',
+          'stars',
+          'dashboard',
+          'notifications'
+        ]
+      , RESERVED_REPO_NAMES = ['followers', 'following']
       
   var $html    = $('html')
     , $sidebar = $('<nav class="octotree_sidebar">' +
@@ -47,26 +61,9 @@
   function getRepoFromPath() {
     var match = location.pathname.match(REGEXP)
     if (!match) return false
-
-    // must not be a reserved `username`
-    var RESERVED_USERNAMES = [
-      'settings',
-      'organizations',
-      'site',
-      'blog',
-      'about',
-      'orgs',
-      'styleguide',
-      'showcases',
-      'trending',
-      'stars',
-      'dashboard',
-      'notifications'
-    ];
-    var RESERVED_REPONAMES = ['followers', 'following'];
      
-    if (~RESERVED_USERNAMES.indexOf(match[1])) return false
-    if (~RESERVED_REPONAMES.indexOf(match[2])) return false
+    if (~RESERVED_USER_NAMES.indexOf(match[1])) return false
+    if (~RESERVED_REPO_NAMES.indexOf(match[2])) return false
 
     // TODO: the intention is to hide the sidebar when users navigate to non-code areas (e.g. Issues, Pulls)
     // and show it again when users navigate back to the code area
@@ -131,7 +128,7 @@
 
     if (err.error === 401) {
       header = 'Invalid token!'
-      message = 'The provided token is invalid. Please enter another one.'
+      message = 'The provided token is invalid. Follow <a href="https://github.com/settings/tokens/new" target="_blank">this link</a> to create a new token and paste it in the textbox below.'
     }
 
     else if (err.error === 404) {