release: bump xbmc.json

From now on, this version will stay in sync with the version reported from
jsonrpc. Addons using jsonrpc should depend on the minimum version necessary to
function so that only users with >= that api available will be able to install.

addons/webinterface.default/addon.xml

@@ -6,7 +6,7 @@
   provider-name="Team XBMC">
   <requires>
     <import addon="xbmc.gui" version="3.00"/>
-    <import addon="xbmc.json" version="2.00"/>
+    <import addon="xbmc.json" version="4.00"/>
   </requires>
   <extension
     point="xbmc.gui.webinterface"/>

addons/xbmc.json/addon.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<addon id="xbmc.json" version="2.0" provider-name="Team XBMC">
+<addon id="xbmc.json" version="4.0" provider-name="Team XBMC">
   <requires>
     <import addon="xbmc.core" version="0.1"/>
   </requires>