Merge pull request #76 from srazer/master

Add a Preference to reset plugin.
Add ClickPlay, iSho.ws and Sweflix
tracking urls for new plugins
update README
update README a little more
try to avoid duplicate background_updater threads
catch error in background updater where list of plugins is not yet loaded
Added PLinkTV - Plex Link TV
Reorder of plugin details.
add tracking url for PLinkTV