Merge pull request #344 from jasnow/master

Upgraded loofah, mysql2, and rubocop gems

Gemfile.lock

@@ -161,7 +161,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.2.0)
+    loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
@@ -173,7 +173,7 @@ GEM
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_test (0.1.2)
-    mysql2 (0.4.10)
+    mysql2 (0.5.0)
     nenv (0.3.0)
     nio4r (2.3.0)
     nokogiri (1.8.2)
@@ -229,7 +229,7 @@ GEM
       thor (>= 0.18.1, < 2.0)
     rainbow (3.0.0)
     raindrops (0.19.0)
-    rake (12.3.0)
+    rake (12.3.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -258,7 +258,7 @@ GEM
       rspec-mocks (~> 3.7.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
-    rubocop (0.53.0)
+    rubocop (0.54.0)
       parallel (~> 1.10)
       parser (>= 2.5)
       powerpack (~> 0.1)