add helper functions to reduce boiler-plate code

Author: AbanoubGhadban

lib/react_on_rails/helper.rb

@@ -101,6 +101,26 @@ def stream_react_component(component_name, options = {})
       )
     end
 
+    def stream_react_component_async(component_name, options = {})
+      rendering_fiber = Fiber.new do
+        stream = stream_react_component(component_name, options)
+        stream.each_chunk do |chunk|
+          Fiber.yield chunk
+        end
+        Fiber.yield nil
+      end
+
+      if @rorp_rendering_fibers.nil?
+        raise ReactOnRails::Error, "You must call stream_view_containing_react_components to render the view containing the react component"
+      end
+      @rorp_rendering_fibers << rendering_fiber
+
+      # return the first chunk of the fiber
+      # It contains the initial html of the component
+      # all updates will be appended to the stream sent to browser
+      rendering_fiber.resume
+    end
+
     # react_component_hash is used to return multiple HTML strings for server rendering, such as for
     # adding meta-tags to a page.
     # It is exactly like react_component except for the following: