Update get_ignores.js

[BhaagBoseDK]

#123
Instead of exiting on failed failed channel, process all --avoid channel and log the error before exiting.

[alexbosworth]

If you want to just avoid a pair and not a channel, you can use the --avoid pubkey/pubkey syntax instead of --avoid chanId - this will not fail if there is no channel between them

[Jones098]

#123
Instead of exiting on failed failed channel, process all --avoid channel and log the error before exiting.

Please help