[donations] Mention BTC (#2238)
[donations] Linkify bitcoin
release 2014.01.27
release 2014.01.27.1
release 2014.01.27.2
release 2014.01.28.1
release 2014.01.29
release 2014.01.30
release 2014.01.30.1
release 2014.01.30.2