added installing oF on thrid-party linux distro

[icq4ever]

I update install on linux. but my english is not perfect. so anyone who find some grammer/whatever error on this document, please check and fix it .

you can view changes here : https://github.com/openframeworks/ofSite/blob/master/content/setup/linux-install.md

[arturoc]

Hey thanks, that sounds really hacky though :) i think we could add a check that reads the distro name from that file and if it's not ubuntu then we can jsut skip that step.

We only need that to install a newer version of the compiler and boost and this is mostly needed for the test server but any new distro will have the minimum required versions, so it should be ok.

Then we can just tell people with other distros based on ubunut or debian to just use those scripts.

[icq4ever]

ok. when you update script, I'll remove this section :)