don't send nil parameters to cloudflare

Author: corbt

lib/cloudflare/connection.rb

@@ -535,7 +535,7 @@ def send_req(params)
       end
 
       req = Net::HTTP::Post.new(uri.path)
-      req.set_form_data(params)
+      req.set_form_data(params.reject{|k, v| v.nil?})
 
       http = Net::HTTP.new(uri.host, uri.port)
       http.use_ssl = true

lib/cloudflare/version.rb

@@ -19,5 +19,5 @@
 # THE SOFTWARE.
 
 module CloudFlare
-  VERSION = '2.0.2'
+  VERSION = '2.0.3'
 end