Update some dependencies

Gemfile.lock

 PATH
   remote: .
   specs:
-    paperclip (3.2.0)
+    paperclip (3.3.0)
       activemodel (>= 3.0.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -52,7 +52,7 @@ GEM
       uuidtools (~> 2.1)
     bourne (1.1.2)
       mocha (= 0.10.5)
-    builder (3.0.0)
+    builder (3.0.4)
     capybara (1.1.2)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -62,7 +62,7 @@ GEM
       xpath (~> 0.1.4)
     childprocess (0.3.2)
       ffi (~> 1.0.6)
-    cocaine (0.4.0)
+    cocaine (0.4.2)
     coderay (1.0.6)
     cucumber (1.2.1)
       builder (>= 2.1.2)
@@ -71,12 +71,12 @@ GEM
       json (>= 1.4.6)
     diff-lcs (1.1.3)
     erubis (2.7.0)
-    excon (0.14.3)
+    excon (0.16.7)
     fakeweb (1.3.0)
     ffi (1.0.11)
-    fog (1.4.0)
+    fog (1.6.0)
       builder
-      excon (~> 0.14.0)
+      excon (~> 0.14)
       formatador (~> 0.2.0)
       mime-types
       multi_json (~> 1.0)
@@ -104,15 +104,15 @@ GEM
       treetop (~> 1.4.8)
     metaclass (0.0.1)
     method_source (0.7.1)
-    mime-types (1.18)
+    mime-types (1.19)
     mocha (0.10.5)
       metaclass (~> 0.0.1)
     multi_json (1.3.6)
     multi_xml (0.5.1)
     net-scp (1.0.4)
       net-ssh (>= 1.99.1)
-    net-ssh (2.5.2)
-    nokogiri (1.5.4)
+    net-ssh (2.6.1)
+    nokogiri (1.5.5)
     polyglot (0.3.3)
     pry (0.9.9.6)
       coderay (~> 1.0.5)
@@ -187,7 +187,7 @@ DEPENDENCIES
   cocaine (~> 0.2)
   cucumber (~> 1.2.1)
   fakeweb
-  fog (~> 1.4.0)
+  fog (>= 1.4.0, < 1.7.0)
   jruby-openssl
   launchy
   mocha

paperclip.gemspec

@@ -43,7 +43,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('capybara')
   s.add_development_dependency('bundler')
   s.add_development_dependency('cocaine', '~> 0.2')
-  s.add_development_dependency('fog', '~> 1.4.0')
+  s.add_development_dependency('fog', '>= 1.4.0', "< 1.7.0")
   s.add_development_dependency('pry')
   s.add_development_dependency('launchy')
   s.add_development_dependency('rake')