Add r2pm package for bjoern tool

[crowell]

From @radare on November 20, 2015 10:59

https://github.com/fabsx00/bjoern-radare

Copied from original issue: radareorg/radare2#3719

[XVilka]

It is dead. Can we close it?

[radare]

ok to me

[XVilka]

Seems it is planned to be revived.