Fixing glitches in the Drubuntu documentation

I've noticed a couple of glitches in the Drubuntu how-to. Since they are wiki pages, and I'm going through trying each line of code, I've updated what isn't working to have the fixes or changes necessary to make them work.

1. Skype wasn't installing on apt-get, I added instructions for getting this downloadable.

2. On the eclipse install, the instructions about adding the Eclipse extensions also was wrong. When I followed the directions, there was no Add Site button until I clicked on the Available Software tab.

I will post if I find any other glitches which I'm sure is due to the technologies involved evolving faster than the documentation =)

-Myke