upgrade to jekyll 3 due to

https://github.com/blog/2100-github-pages-now-faster-and-simpler-with-jekyll-3-0

Gemfile.lock

@@ -2,16 +2,13 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.2.9)
-    activesupport (4.2.5)
+    activesupport (4.2.5.1)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.3.8)
-    blankslate (2.1.2.4)
-    classifier-reborn (2.0.4)
-      fast-stemmer (~> 1.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -24,40 +21,39 @@ GEM
     execjs (2.6.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    fast-stemmer (1.0.2)
     ffi (1.9.10)
     fuzzy_match (2.1.0)
     gemoji (2.1.0)
-    github-pages (43)
+    github-pages (44)
       RedCloth (= 4.2.9)
       github-pages-health-check (= 0.6.0)
-      jekyll (= 2.4.0)
+      jekyll (= 3.0.2)
       jekyll-coffeescript (= 1.0.1)
       jekyll-feed (= 0.3.1)
       jekyll-gist (= 1.4.0)
-      jekyll-mentions (= 0.2.1)
+      jekyll-mentions (= 1.0.0)
       jekyll-paginate (= 1.1.0)
       jekyll-redirect-from (= 0.9.1)
       jekyll-sass-converter (= 1.3.0)
       jekyll-seo-tag (= 0.1.4)
       jekyll-sitemap (= 0.9.0)
-      jemoji (= 0.5.0)
+      jekyll-textile-converter (= 0.1.0)
+      jemoji (= 0.5.1)
       kramdown (= 1.9.0)
-      liquid (= 2.6.2)
-      maruku (= 0.7.0)
+      liquid (= 3.0.6)
       mercenary (~> 0.3)
-      pygments.rb (= 0.6.3)
       rdiscount (= 2.1.8)
       redcarpet (= 3.3.3)
+      rouge (= 1.10.1)
       terminal-table (~> 1.4)
     github-pages-health-check (0.6.0)
       addressable (~> 2.3)
       net-dns (~> 0.8)
       public_suffix (~> 1.4)
       typhoeus (~> 0.7)
-    html-pipeline (1.9.0)
-      activesupport (>= 2)
-      nokogiri (~> 1.4)
+    html-pipeline (2.3.0)
+      activesupport (>= 2, < 5)
+      nokogiri (>= 1.4)
     html-proofer (2.5.2)
       addressable (~> 2.3)
       colored (~> 1.2)
@@ -67,29 +63,23 @@ GEM
       typhoeus (~> 0.7)
       yell (~> 2.0)
     i18n (0.7.0)
-    jekyll (2.4.0)
-      classifier-reborn (~> 2.0)
+    jekyll (3.0.2)
       colorator (~> 0.1)
-      jekyll-coffeescript (~> 1.0)
-      jekyll-gist (~> 1.0)
-      jekyll-paginate (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
       kramdown (~> 1.3)
-      liquid (~> 2.6.1)
+      liquid (~> 3.0)
       mercenary (~> 0.3.3)
-      pygments.rb (~> 0.6.0)
-      redcarpet (~> 3.1)
+      rouge (~> 1.7)
       safe_yaml (~> 1.0)
-      toml (~> 0.1.0)
     jekyll-coffeescript (1.0.1)
       coffee-script (~> 2.2)
     jekyll-feed (0.3.1)
     jekyll-gist (1.4.0)
       octokit (~> 4.2)
-    jekyll-mentions (0.2.1)
-      html-pipeline (~> 1.9.0)
-      jekyll (~> 2.0)
+    jekyll-mentions (1.0.0)
+      html-pipeline (~> 2.2)
+      jekyll (~> 3.0)
     jekyll-paginate (1.1.0)
     jekyll-redirect-from (0.9.1)
       jekyll (>= 2.0)
@@ -98,47 +88,43 @@ GEM
     jekyll-seo-tag (0.1.4)
       jekyll (>= 2.0)
     jekyll-sitemap (0.9.0)
-    jekyll-watch (1.3.0)
+    jekyll-textile-converter (0.1.0)
+      RedCloth (~> 4.0)
+    jekyll-watch (1.3.1)
       listen (~> 3.0)
-    jemoji (0.5.0)
+    jemoji (0.5.1)
       gemoji (~> 2.0)
-      html-pipeline (~> 1.9)
+      html-pipeline (~> 2.2)
       jekyll (>= 2.0)
     json (1.8.3)
     kramdown (1.9.0)
-    liquid (2.6.2)
+    liquid (3.0.6)
     listen (3.0.5)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    maruku (0.7.0)
     mercenary (0.3.5)
     mini_portile2 (2.0.0)
-    minitest (5.8.3)
+    minitest (5.8.4)
     multipart-post (2.0.0)
     net-dns (0.8.0)
-    nokogiri (1.6.7.1)
+    nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
     octokit (4.2.0)
       sawyer (~> 0.6.0, >= 0.5.3)
     parallel (1.6.1)
-    parslet (1.5.0)
-      blankslate (~> 2.0)
-    posix-spawn (0.3.11)
     public_suffix (1.5.3)
-    pygments.rb (0.6.3)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.2.0)
     rake (10.5.0)
     rb-fsevent (0.9.7)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
     rdiscount (2.1.8)
     redcarpet (3.3.3)
+    rouge (1.10.1)
     rspec (3.4.0)
       rspec-core (~> 3.4.0)
       rspec-expectations (~> 3.4.0)
       rspec-mocks (~> 3.4.0)
-    rspec-core (3.4.1)
+    rspec-core (3.4.2)
       rspec-support (~> 3.4.0)
     rspec-expectations (3.4.0)
       diff-lcs (>= 1.2.0, < 2.0)
@@ -154,13 +140,10 @@ GEM
       faraday (~> 0.8, < 0.10)
     terminal-table (1.5.2)
     thread_safe (0.3.5)
-    toml (0.1.2)
-      parslet (~> 1.5.0)
     typhoeus (0.8.0)
       ethon (>= 0.8.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    yajl-ruby (1.2.1)
     yell (2.0.5)
 
 PLATFORMS

spec/license_bom_spec.rb

@@ -1,8 +1,8 @@
 require 'spec_helper'
 
 describe "byte order marks" do
-  Dir["#{licenses_path}/*.txt"].each do |file|
-    context "the #{File.basename(file, ".txt")} license" do
+  Dir["#{licenses_path}/*.html"].each do |file|
+    context "the #{File.basename(file, ".html")} license" do
       it "does not begin with a byte order mark" do
         bom = !!(File.open(file).read =~ /\A\xEF\xBB\xBF/)
         msg = "License file begins with a Byte Order Mark. See http://stackoverflow.com/a/1068700."

spec/license_meta_spec.rb

@@ -4,7 +4,7 @@ describe "license meta" do
   licenses.each do |license|
 
     # Manually load the raw license so we don't get thed defaults
-    raw_fields = SafeYAML.load_file("_licenses/#{license["id"]}.txt")
+    raw_fields = SafeYAML.load_file("_licenses/#{license["id"]}.html")
 
     context "The #{license["title"]} license" do
       it "should only contain supported meta fields" do

spec/license_spec.rb

@@ -3,7 +3,7 @@ require 'spec_helper'
 describe "licenses" do
 
   it "matches the number of files in the _licenses folder" do
-    expect(licenses.count).to eql(Dir["#{licenses_path}/*.txt"].count)
+    expect(licenses.count).to eql(Dir["#{licenses_path}/*.html"].count)
   end
 
   licenses.each do |license|

spec/spec_helper.rb

@@ -25,7 +25,7 @@ end
 def licenses
   $licenses ||= begin
     site.collections["licenses"].docs.map do |license|
-      id = File.basename(license.basename, ".txt")
+      id = File.basename(license.basename, ".html")
       license.to_liquid.merge("id" => id)
     end
   end