Upgrade Devise, Nokogiri for fix security issue.

CVE-2015-8314, CVE-2015-7499

Author: huacnlee

Gemfile.lock

@@ -134,7 +134,7 @@ GEM
       thor (~> 0.19)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
-    devise (3.5.3)
+    devise (3.5.4)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
       railties (>= 3.2.6, < 5)
@@ -264,7 +264,7 @@ GEM
     net-ssh (3.0.1)
     net-ssh-gateway (1.2.0)
       net-ssh (>= 2.6.5)
-    nokogiri (1.6.7.1)
+    nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
     oauth2 (1.0.0)
       faraday (>= 0.8, < 0.10)
@@ -344,7 +344,7 @@ GEM
       thor (>= 0.18.1, < 2.0)
     rainbow (2.0.0)
     raindrops (0.15.0)
-    rake (10.4.2)
+    rake (10.5.0)
     redcarpet (3.3.4)
     redis (3.2.2)
     redis-namespace (1.5.2)