Adding NGI AVmusic skill (MycroftAI#215)

Allow the user request playback of any music or video available free of charge. Version 1.0

.gitmodules

@@ -418,6 +418,9 @@
 [submodule "kde-kate-control"]
 	path = kde-kate-control
 	url = https://github.com/AIIX/kde-kate-control.git
+[submodule "AVmusic-skill"]
+	path = AVmusic-skill
+	url = https://github.com/NeonGeckoCom/AVmusic-skill.git
 [submodule "esp8266-skill"]
 	path = esp8266-skill
 	url = https://github.com/Dark5ide/esp8266-skill.git

README.md

@@ -139,6 +139,7 @@ wiki pages.  Also please include the phrase to trigger on as well for your skill
 
 | Status              | Skill Name                                                                      | Description<br>```"phrase to trigger"```    |
 | ------------------- | ------------------------------------------------------------------------------- | --------------------------------------------|
+| :heavy_check_mark:  | [AVmusic](https://github.com/NeonGeckoCom/AVmusic-skill#readme)| Lets the user request playback of any music or video available. Version 1.0 <br>```"AVmusic play chopin"``` |
 | :heavy_check_mark:  | [Australian news](https://github.com/KathyReid/skill-australian-news/README.md)	| Play ABC news from Australia<br />```"Play Australian news"```|
 | :heavy_check_mark:  | [AutoGUI](../../wiki/SKILL-Autogui)                                             | Manipulate your mouse and keyboard with Mycroft                                                  |
 | :heavy_check_mark:  | [Basic help](https://github.com/btotharye/mycroft-skill-basichelp#readme)       | Get basic Mycroft questions and help answered<br>```"where is the documentation", "how do I install from source"```         |