Fix GitHub pages deployment

.travis.yml

@@ -38,13 +38,4 @@ jobs:
   - stage: Update GitHub Pages
     if: branch = release
     rvm: 2.6.1
-    script: skip
-    before_deploy: bundle exec rake github:pages
-    deploy:
-      provider: pages
-      local-dir: doc
-      github-token: "$GITHUB_TOKEN"
-      keep-history: true
-      skip_cleanup: true
-      on:
-        branch: release
+    script: bundle exec rake github:pages

rakelib/github.rake

@@ -9,7 +9,7 @@ namespace :github do
   end
 
   desc 'Generate Yard documentation in /doc'
-  task pages: ['strings:generate', 'strings:gh_pages:configure']
+  task pages: %i[github:token strings:gh_pages:update]
 
   desc 'Release the module on GitHub'
   task release: %i[clean build] do
@@ -46,4 +46,15 @@ namespace :github do
 
     puts '[GitHub] Module successfully released'
   end
+
+  task :token do
+    require 'uri'
+
+    remote_uri = URI(`git remote get-url origin`.strip)
+
+    remote_uri.user = ENV['GITHUB_USERNAME']
+    remote_uri.password = ENV['GITHUB_TOKEN']
+
+    system("git remote set-url origin #{remote_uri}")
+  end
 end