Ubuntu script failing due to invalid link

[chaudhryaziz]

When executing the Ubuntu script in Ubuntu Mate 15.04 the script fails due to the fact that the following line:

sudo add-apt-repository ppa:chris-lea/node.js

will add an invalid entry under Ubuntu 15.04 and thus running sudo apt-get update will fail.

Furthermore, for new users this may cause confusion as now there is an invalid entry whenever sudo apt-get update is performed that the user may not know how to remove.

As a result, maybe we can add a check to ensure the repository is valid before adding it?

[craysiii]

Just ran into this issue when creating a new 15.04 VM. Interesting because I had used this method in two other instances on 15.04 and did not have any problems then.

All I need is an up-to-date version of node.js, correct? I will try to find a different PPA or source, and remove the offending line when I run it again.

[craysiii]

I got it to work, which can be seen in my latest commit b843ed5. I noticed that the script wanted to use curl before installing it, so I fixed that as well.

Not sure if I should make a pull-request or not.