Update gem dependencies

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.0.1)
+    activesupport (4.0.2)
       i18n (~> 0.6, >= 0.6.4)
       minitest (~> 4.2)
       multi_json (~> 1.3)
@@ -29,13 +29,13 @@ GEM
     ffi (1.9.3)
     highline (1.6.20)
     hike (1.2.3)
-    html-pipeline (1.0.0)
+    html-pipeline (1.1.0)
       activesupport (>= 2)
       nokogiri (~> 1.4)
-    i18n (0.6.5)
+    i18n (0.6.9)
     json (1.8.1)
     method_source (0.8.2)
-    mime-types (1.25)
+    mime-types (1.25.1)
     mini_portile (0.5.2)
     minitest (4.7.5)
     multi_json (1.8.2)
@@ -46,7 +46,7 @@ GEM
     progress_bar (1.0.0)
       highline (~> 1.6.1)
       options (~> 2.3.0)
-    pry (0.9.12.3)
+    pry (0.9.12.4)
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
@@ -61,7 +61,7 @@ GEM
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
-    sinatra-contrib (1.4.1)
+    sinatra-contrib (1.4.2)
       backports (>= 2.0)
       multi_json
       rack-protection
@@ -69,7 +69,7 @@ GEM
       sinatra (~> 1.4.0)
       tilt (~> 1.3)
     slop (3.4.7)
-    sprockets (2.10.0)
+    sprockets (2.10.1)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -87,7 +87,7 @@ GEM
     typhoeus (0.6.6)
       ethon (~> 0.6.1)
     tzinfo (0.3.38)
-    uglifier (2.3.1)
+    uglifier (2.3.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     unix_utils (0.0.15)