Fix installation on plain ubuntu 14.04

When trying to run `make all` on a semi plain 14.04 I had to fix some dependencies problem. 
`apt-get install nodejs` doesn't bring `npm` and the install command in the read me was line wrapped at the wrong place.

also, on 14.04 the nodejs executable is called nodejs but some of the dependencies try to execute `node` this is simply solved with a symlink