Add filename_override upload parameter

Author: RTLcoil

lib/cloudinary/uploader.rb

@@ -42,6 +42,7 @@ def self.build_upload_params(options)
       :faces                     => Cloudinary::Utils.as_safe_bool(options[:faces]),
       :folder                    => options[:folder],
       :format                    => options[:format],
+      :filename_override         => options[:filename_override],
       :headers                   => build_custom_headers(options[:headers]),
       :image_metadata            => Cloudinary::Utils.as_safe_bool(options[:image_metadata]),
       :invalidate                => Cloudinary::Utils.as_safe_bool(options[:invalidate]),

spec/uploader_spec.rb

@@ -71,6 +71,11 @@
     expect(result["signature"]).to eq(expected_signature)
   end
 
+  it "should successfully override original_filename" do
+    result = Cloudinary::Uploader.upload(TEST_IMAGE_URL, :filename_override => "overridden", :tags => [TEST_TAG, TIMESTAMP_TAG])
+    expect(result["original_filename"]).to eq("overridden")
+  end
+
   it "should successfully upload file asynchronously" do
     result = Cloudinary::Uploader.upload(Pathname.new(TEST_IMG), :async => true)
     expect(result["status"]).to eq("pending")