Fix/is github is gist github

This reverts the commits and makes several fixes.

I am not sure about that `git+ssh` and `git+https` thingy at github - they don't seem to work. 

Or maybe I am doing something wrong?

```
 $ git clone git+ssh://github.com/robertkowalski/gelf-node
Cloning into 'gelf-node'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
```

```
 $ git clone git+ssh://github.com:ForbesLindesay/discern.git
Cloning into 'discern'...
ssh: Could not resolve hostname github.com:ForbesLindesay: nodename nor servname provided, or not known
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
```

```
$ git remote set-url origin git+ssh://github.com/ForbesLindesay/discern.git
$ git push origin fix/isGitHub-isGist-github
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
```