Update gems

- activesupport (4.2.7)
- ffi (1.9.14)
- github-pages (88)
- jekyll-redirect-from (0.11.0)
- html-pipeline (2.4.2)
- jekyll-watch (1.5.0)

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.6)
+    activesupport (4.2.7)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -18,10 +18,11 @@ GEM
     execjs (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.13)
-    ffi (1.9.13-x64-mingw32)
+    ffi (1.9.14)
+    ffi (1.9.14-x64-mingw32)
     gemoji (2.1.0)
-    github-pages (86)
+    github-pages (88)
+      activesupport (= 4.2.7)
       github-pages-health-check (= 1.1.0)
       jekyll (= 3.1.6)
       jekyll-coffeescript (= 1.0.1)
@@ -30,7 +31,7 @@ GEM
       jekyll-github-metadata (= 2.0.2)
       jekyll-mentions (= 1.1.3)
       jekyll-paginate (= 1.1.0)
-      jekyll-redirect-from (= 0.10.0)
+      jekyll-redirect-from (= 0.11.0)
       jekyll-sass-converter (= 1.3.0)
       jekyll-seo-tag (= 2.0.0)
       jekyll-sitemap (= 0.10.0)
@@ -47,8 +48,8 @@ GEM
       octokit (~> 4.0)
       public_suffix (~> 1.4)
       typhoeus (~> 0.7)
-    html-pipeline (2.4.1)
-      activesupport (>= 2, < 5)
+    html-pipeline (2.4.2)
+      activesupport (>= 2)
       nokogiri (>= 1.4)
     i18n (0.7.0)
     jekyll (3.1.6)
@@ -72,14 +73,14 @@ GEM
       html-pipeline (~> 2.3)
       jekyll (~> 3.0)
     jekyll-paginate (1.1.0)
-    jekyll-redirect-from (0.10.0)
+    jekyll-redirect-from (0.11.0)
       jekyll (>= 2.0)
     jekyll-sass-converter (1.3.0)
       sass (~> 3.2)
     jekyll-seo-tag (2.0.0)
       jekyll (~> 3.1)
     jekyll-sitemap (0.10.0)
-    jekyll-watch (1.4.0)
+    jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
     jemoji (0.6.2)
       gemoji (~> 2.0)