Change protocol to git+https for dependencies URLs.

Installation becomes an error in case of the environment(inside firewall, proxy, etc) where the git protocol is restricted.

    # npm install git+https://github.com/jsdoc3/jsdoc.git
    ...
    npm ERR! git clone git://github.com/dominictarr/crypto-browserify.git fatal: unable to connect to github.com:
    npm ERR! git clone git://github.com/dominictarr/crypto-browserify.git github.com[0: 207.97.227.239]: errno=No error
    ...

Prease exclude git protocol in dependencies URLs.