* Electron version: 1.8.2-beta.2
* Operating system: macOS

### Expected behavior

process.versions should print `1.8.2-beta.2` for electron

### Actual behavior

`1.8.2` is printed

### How to reproduce

Use devtools and execute `process.versions`
atom/common/atom_version.h
#ifndef ATOM_COMMON_ATOM_VERSION_H_
#define ATOM_COMMON_ATOM_VERSION_H_