Allow the other types of URLs that npm supports.
Allow the other types of URLs that npm supports.

See for instance #844 for people running into the
fact that our lack of support for git protocols means
dealing with private npm packages is a pain.

lpinto93/meteor,lassombra/meteor,lpinto93/meteor,lassombra/meteor,4commerce-technologies-AG/meteor,lorensr/meteor,lpinto93/meteor,mjmasn/meteor,jdivy/meteor,chasertech/meteor,Urigo/meteor,AnthonyAstige/meteor,newswim/meteor,newswim/meteor,chasertech/meteor,meonkeys/meteor,newswim/meteor,nuvipannu/meteor,nuvipannu/meteor,nuvipannu/meteor,benstoltz/meteor,lorensr/meteor,chasertech/meteor,benstoltz/meteor,chasertech/meteor,devgrok/meteor,DAB0mB/meteor,benstoltz/meteor,Urigo/meteor,DAB0mB/meteor,meonkeys/meteor,Urigo/meteor,Urigo/meteor,4commerce-technologies-AG/meteor,chasertech/meteor,DAB0mB/meteor,DAB0mB/meteor,benstoltz/meteor,lorensr/meteor,AnthonyAstige/meteor,Hansoft/meteor,newswim/meteor,jdivy/meteor,meonkeys/meteor,nuvipannu/meteor,lpinto93/meteor,lorensr/meteor,mjmasn/meteor,mjmasn/meteor,chasertech/meteor,4commerce-technologies-AG/meteor,lpinto93/meteor,jdivy/meteor,lassombra/meteor,newswim/meteor,devgrok/meteor,Hansoft/meteor,mjmasn/meteor,AnthonyAstige/meteor,AnthonyAstige/meteor,newswim/meteor,jdivy/meteor,Urigo/meteor,benstoltz/meteor,DAB0mB/meteor,Hansoft/meteor,mjmasn/meteor,newswim/meteor,chasertech/meteor,jdivy/meteor,4commerce-technologies-AG/meteor,4commerce-technologies-AG/meteor,Urigo/meteor,Hansoft/meteor,AnthonyAstige/meteor,lassombra/meteor,meonkeys/meteor,Urigo/meteor,4commerce-technologies-AG/meteor,benstoltz/meteor,meonkeys/meteor,mjmasn/meteor,lassombra/meteor,devgrok/meteor,jdivy/meteor,DAB0mB/meteor,nuvipannu/meteor,Hansoft/meteor,mjmasn/meteor,devgrok/meteor,lorensr/meteor,Hansoft/meteor,meonkeys/meteor,DAB0mB/meteor,Hansoft/meteor,lorensr/meteor,lpinto93/meteor,lpinto93/meteor,nuvipannu/meteor,benstoltz/meteor,AnthonyAstige/meteor,lassombra/meteor,devgrok/meteor,4commerce-technologies-AG/meteor,AnthonyAstige/meteor,jdivy/meteor,devgrok/meteor,lassombra/meteor,lorensr/meteor,nuvipannu/meteor,AnthonyAstige/meteor,devgrok/meteor,meonkeys/meteor