Upgrade to HTTP.rb v4 (#9)

This allows Goldfinger to run against the HTTP gem v4.x, by updating the
`HTTP.timeout` syntax used in `Goldfinger::Request`.

Gemfile.lock

@@ -3,7 +3,7 @@ PATH
   specs:
     goldfinger (2.1.0)
       addressable (~> 2.5)
-      http (~> 3.0)
+      http (~> 4.0)
       nokogiri (~> 1.8)
       oj (~> 3.0)
 
@@ -16,31 +16,31 @@ GEM
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
-    domain_name (0.5.20170404)
+    domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     fuubar (2.2.0)
       rspec-core (~> 3.0)
       ruby-progressbar (~> 1.4)
     hashdiff (0.3.4)
-    http (3.0.0)
+    http (4.0.0)
       addressable (~> 2.3)
       http-cookie (~> 1.0)
-      http-form_data (>= 2.0.0.pre.pre2, < 3)
+      http-form_data (~> 2.0)
       http_parser.rb (~> 0.6.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    http-form_data (2.0.0)
+    http-form_data (2.1.1)
     http_parser.rb (0.6.0)
     method_source (0.8.2)
     mini_portile2 (2.3.0)
-    nokogiri (1.8.1)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
-    oj (3.3.10)
+    oj (3.7.4)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    public_suffix (3.0.1)
+    public_suffix (3.0.3)
     rake (12.0.0)
     rspec (3.6.0)
       rspec-core (~> 3.6.0)
@@ -60,7 +60,7 @@ GEM
     slop (3.6.0)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.4)
+    unf_ext (0.0.7.5)
     webmock (3.0.1)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)

goldfinger.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
   s.homepage              = 'https://github.com/Gargron/goldfinger'
   s.licenses              = ['MIT']
 
-  s.add_dependency('http', '~> 3.0')
+  s.add_dependency('http', '~> 4.0')
   s.add_dependency('addressable', '~> 2.5')
   s.add_dependency('nokogiri', '~> 1.8')
   s.add_dependency('oj', '~> 3.0')

lib/goldfinger/request.rb

@@ -18,7 +18,7 @@ module Goldfinger
     private
 
     def http_client
-      HTTP.timeout(:per_operation, write: 60, connect: 20, read: 60).follow
+      HTTP.timeout(write: 60, connect: 20, read: 60).follow
     end
   end
 end