Change the name of the Brackets Node executable

[ficristo]

Description

I had trouble to install some extensions on OSX. The problem was that the node command wasn't found.
I think the problem is the executable name of node process of Brackets: on Windows is node.exe, and on Windows 10 I don't have any problem, while on macOS and Linux is Brackets-node.
I don't have proof this is the real problem but to my eyes seems very likely.

On #10658 there were some discussion to rename the process on Windows. Maybe we should instead rename the others?

Steps to Reproduce

1. Go to the extension manager
2. Try to install the npm registry extension

Expected behavior: the extension should be installed

Actual behavior: the installation fails

Versions

OSX
1.9