support OSX notifications as alternative to growl

[RaVbaker]

I have coded the OSX Notifications support for rerun. It uses terminal-notifier gem. And you can use it with two different arguments: -on or --osx-notifications. If you will use it will disable the growl notifications.

Related to issue: #33

How it looks? See here:

[pvdb]

👍 / @alexch - can we please have it on master? 😄

[alexch]

This looks great but I'm worried about adding a gem requirement for terminal-notifier in case people are on a different platform or a lower OS X version. Not sure how to do optional gems... :-(

[alexch]

I suppose I could check for the terminal-notifier binary, like I check for growlnotify now, and ask the user to install it manually via gem or homebrew if they want it. (This is a developer tool after all!)

[jmuheim]

Any news on this?

[alexch]

I looked into it and I think a better approach would be to look for the
command line tool rather than the gem. Otherwise I might need to get into
building different rerun gems for different platforms... which is doable
but annoying. I did a bunch of work on rerun last week and I hope to get
some time this week to do more.

[jmuheim]

This would be really nice. Maybe @RaVbaker could update his PR?

[jeromegn]

👍

[alexch]

starting work on this here: 5532e9b

[alexch]

and finished here (mostly): 95a1eb1