fix(xml): forgot to add shared.xml

As XML files are ignored, I didn't see that.

README.md

@@ -22,8 +22,8 @@ The license of everything not explicitly under a different license are licensed
 What follows is a list of other material that is licensed differently.
 
 * **./etc/bin/json2xml.py** is licensed like MIT, as shown in the header of the file. See original source [on github][html2json].
-* **./etc/bin/gsl_\*** is licensed under [GNU GPL][imatix-copying]. The source code is [on github][gsl]
-* **./etc/api/\*\*/*.json** are licensed under a [MIT-like google license][google-lic]
+* **./etc/bin/gsl_\*** is licensed under [GNU GPL][imatix-copying]. The source code is [on github][gsl].
+* **./etc/api/\*\*/*.json** are licensed under a [MIT-like google license][google-lic].
 
 
 [oauth]: https://crates.io/crates/yup-oauth2

etc/api/shared.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Contains values shared among all API implementations -->
+<shared>
+	<!-- All APIs we are able to supposed build -->
+	<apis base-path="etc/api">
+		<api name="youtube" version="v3"/>
+	</apis>
+	<cargo>	
+		<build version="0.0.1"/>
+		<authors>
+			<author name="Sebastian Thiel" email="byronimo@gmail"/>
+		</authors>
+		<keywords>
+			<word name="google"/>
+			<word name="protocol"/>
+		</keywords>
+		<!-- All APIs should live in the same repository -->
+		<repository url="https://github.com/Byron/youtube-rs"/>
+	</cargo>
+</shared>