README.md fix links to podlove-subscribe-button

fix links to podlove-subscribe-button that still mention fix links to podlove-subscribe-it
Merge pull request #8 from kne1p/patch-1

README.md fix links to podlove-subscribe-button
add support for Clementine Music Player on GNU/Linux
Merge pull request #9 from juergenhoetzel/master

add support for Clementine Music Player on GNU/Linux
solve most obvious IE problems
add more options to example
Merge branch '1.1'

Conflicts:
	build/subscribe-it.js
	build/subscribe-it.min.js
	index.html
	src/javascripts/subscribe-it.coffee
set higher z-index for popup