Using backticks feature of the shell in run script options

Hey everyone,

I want to compile a C file using atom-script's profiles feature. In short, I need to execute this:

```
gcc `pkg-config --cflags gtk+-3.0` -o filename filename.c `pkg-config --libs gtk+-3.0`
```

The line above includes a backticks feature of the shell (e.g. `` `pkg-config --cflags gtk+-3.0` ``). However, I'm not sure how to correctly implement it. Should I pass it as a command/program argument? It doesn't seem to work.

Love the package, thanks!