Support manual triggers

[aelsabbahy]

First off, thanks for the awesome tool, I use it almost every day now.

One feature I would like is the ability to manually trigger reflex by hitting enter (or maybe ctrl-g) key.

Today I have to touch a file to get an initial run, a key-binding would be more clean.

[cespare]

What is ctrl-g? That doesn't typically send some signal that I'm aware of.

I'd use ctrl-t (SIGINFO) but that only works on OS X, not Linux.

Enter seems okay. I'll probably do that.

[aelsabbahy]

Enter works, I think that's what guard uses.

[matrixik]

That would be really useful functionality.

[gabroo]

Is this still being evaluated as a feature?