Add xmr1.rs.me, xmr2.rs.me, xmr3.rs.me nodes to the list of remote nodes

[SChernykh]

These 3 nodes are running 24/7 and are quite reliable: https://nodes.rs.me/

https://www.reddit.com/r/Monero/comments/13cizv2/happy_to_host_three_monero_public_nodes/

I use them in my P2Pool CI tests and didn't have problems so far.

[hinto-janai]

Thanks, added in #80.

[MattJGH]

These nodes will need removing should they still be included in this project - owner of the nodes will struggle to operate, maintain and pay for these nodes from a jail cell. (https://www.justice.gov/usao-sdny/media/1352551/dl)

[hinto-janai]

Thanks, removed in 1cc10b9.