Add a default custom bear directory to check relative to project roots

[underyx]

It's currently possible to set bear_dirs = .coabears to make coala pick up custom bears included with a project, but it would be better to have a default, standard location for these. My vote is for .coabears/.

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CC @sils1297, @AbdealiJK

[sils]

My vote is for bears/, that's proper code it shouldn't be hidden IMO.

Also that setting should be relative to the coafile, right? That actually makes it kind of complicated technically...

[sils]

let's go for .bears/?

[underyx]

I would still prefer .coabears/ to keep consistency with all the other .coathings.

[underyx]

Excerpts from gitter discussion:

• .coabears is easier to google than .bears
• The fact we could use .bears is just a happy coincidence cause no other project has bears. Other dotfiles are named .git + ignore, .docker + ignore, .vim + rc, .bash + rc, etc. — the .bears suggestion would break this naming scheme by making the name . + bears. Also, had they been called checks instead of bears, we'd definitely have to call it .coachecks.

[Makman2]

I'm also for coabears as it does fit better in our naming scheme imo. I like some kind of default location, so people don't need to deal with the bear-paths, for simple stuff we just say: "Put them -->there (coabears/)<--"

[underyx]

@Makman2 to clarify, is your vote for .coabears or coabears?

[underyx]

Relevant point from yesterday on gitter:

• These bears would be configuration just like .coafile, justifying making the directory hidden. It's just configuration that's so complex that it has to be expressed with code.

[Makman2]

good question, at least I vote for the usage of this word :P
I don't really care whether we should use a period before or not^^

[adtac]

I like .coabears more: while it's proper code that is related to the project, it is not going to change much and it's not really related to the project. It is more of a helper for the project, like .git.

But then again there are exceptions like node_modules

[Makman2]

let's do it like git :P