add key bindings to compilation buffer

[derikson]

It would be handy if one could use the key bindings in the rspec compilation buffer. Some, like C-c , r, just make sense. Others, like C-c , s could look at the failing example closest to point and run that.

[dgutov]

Some, like C-c , r, just make sense.

To re-run the compilation, you can just press g.

[derikson]

Thanks. Other keybindings, like C-c , f don't seem to have an equivalent, however.