Install middleman-gh-pages

Gemfile

@@ -1,21 +1,8 @@
-# If you have OpenSSL installed, we recommend updating
-# the following line to use "https"
-source 'http://rubygems.org'
+source 'https://rubygems.org'
 
 gem "middleman", "~>3.1.6"
-
-# Live-reloading plugin
 gem "middleman-livereload", "~> 3.1.0"
-
-# For faster file watcher updates on Windows:
-gem "wdm", "~> 0.1.0", :platforms => [:mswin, :mingw]
-
-# Cross-templating language block fix for Ruby 1.8
-platforms :mri_18 do
-  gem "ruby18_source_location"
-end
-
-# ---
+gem "middleman-gh-pages"
 
 gem 'slim'
 gem 'redcarpet'

Gemfile.lock

@@ -1,5 +1,5 @@
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
     activesupport (3.2.15)
       i18n (~> 0.6, >= 0.6.4)
@@ -51,6 +51,8 @@ GEM
       rack-test (~> 0.6.1)
       thor (>= 0.15.2, < 2.0)
       tilt (~> 1.3.6)
+    middleman-gh-pages (0.0.2)
+      rake (> 0.9.3)
     middleman-livereload (3.1.0)
       em-websocket (>= 0.2.0)
       middleman-core (>= 3.0.2)
@@ -69,13 +71,13 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
+    rake (10.1.0)
     rb-fsevent (0.9.3)
     rb-inotify (0.9.2)
       ffi (>= 0.5.0)
     rb-kqueue (0.2.0)
       ffi (>= 0.5.0)
     redcarpet (3.0.0)
-    ruby18_source_location (0.2)
     sass (3.2.12)
     slim (2.0.0)
       temple (~> 0.6.5)
@@ -102,8 +104,7 @@ PLATFORMS
 
 DEPENDENCIES
   middleman (~> 3.1.6)
+  middleman-gh-pages
   middleman-livereload (~> 3.1.0)
   redcarpet
-  ruby18_source_location
   slim
-  wdm (~> 0.1.0)