Bump version to 0.5.0

Author: bblaszkow06

Diff for: README.md

@@ -22,7 +22,7 @@ The package can be installed by adding `membrane_rtmp_plugin` to your list of de
 ```elixir
 def deps do
   [
-    {:membrane_rtmp_plugin, "~> 0.4.1"}
+    {:membrane_rtmp_plugin, "~> 0.5.0"}
   ]
 end
 ```

Diff for: mix.exs

@@ -1,7 +1,7 @@
 defmodule Membrane.RTMP.Mixfile do
   use Mix.Project
 
-  @version "0.4.1"
+  @version "0.5.0"
   @github_url "https://github.com/membraneframework/membrane_rtmp_plugin"
 
   def project do