support CoffeeTags on moon files

[yi]

Hi @leafo:

I have been using CoffeeTags a lot in my diary work. It clearly lists an outline of the coffeescript file, which saves me a lot time.

Now I switched to moonscript projects, and found the CoffeeTags can work perfectly on moon files. So I combined the coffeetags vim plugin into the moonscript plugin. And now I can have a nice moonscript code outline in the tagbar.

[leafo]

is this going to show a warning every time someone runs vim without ruby regardless of whether they have coffeetags installed or not?

[yi]

@leafo : I assume it is. I haven't got a vim without ruby integration to check. But I thinks that if statment is to make sure the client machine has got ruby env, since CoffeeTags is actually a ruby script.
Do you think we shall remove echohl WarningMsg to make sure the plugin won't be annoying on vim client without ruby? Please let me know. I can do that.