Proxy options added

lib/docraptor/api_client.rb

@@ -111,6 +111,8 @@ def build_request(http_method, path, opts = {})
         :sslcert => @config.cert_file,
         :sslkey => @config.key_file,
         :verbose => @config.debugging,
+        :proxy => @config.proxy,
+        :proxyuserpwd => @config.proxyuserpwd,
         :followlocation => follow_location
       }
 

lib/docraptor/configuration.rb

@@ -133,6 +133,16 @@ class Configuration
     # https://github.com/typhoeus/ethon/blob/master/lib/ethon/easy/queryable.rb#L96
     attr_accessor :params_encoding
 
+    # Proxy URL to pass to Typhoeus.
+    # Default to nil.
+    attr_accessor :proxy
+
+    # Proxy username & password to pass to Typhoeus.
+    # Format as `username:password`.
+    #
+    # Default to nil.
+    attr_accessor :proxyuserpwd
+
 
     attr_accessor :inject_format
 
@@ -155,6 +165,8 @@ def initialize
       @key_file = nil
       @timeout = 0
       @params_encoding = nil
+      @proxy = nil
+      @proxyuserpwd = nil
       @debugging = false
       @inject_format = false
       @force_ending_format = false