[Bug-datamash] Install on Unbuntu 12.04 (Precise)?

[optimizerx]

Hi.

I'm very excited with the potential for datamash, but need a small bit  
of your input to resolve an installation error:

E: Unable to locate package datamash

Steps I've taken to resolve it:

1) sudo apt-get update
2) sudo apt-cache search datamash
3) sudo gedit /etc/apt/sources.list

What is the correct package repository I should either add to item #3  
above or alternatively use for Github (using devtools)?

Thank you very much in advance for your support & development of a  
greatly useful CLI package.

Regards.