fix: binding.gyp: ensure cflags from pkg-config is properly expanded as list (#309)
fix: binding.gyp: ensure cflags from pkg-config is properly expanded as list (#309)

The flags from pkg-config got quoted together in compile_commands.json with
the previous config, and CLion failed to recognize include directory
specified in such ways. A slight modification to the gyp file seems to fix
this.
romgrk/node-gtk,romgrk/node-gtk,romgrk/node-gtk,romgrk/node-gtk,romgrk/node-gtk