Don't check in access token

[friedbunny]

Preparation for making this repo public (#40). The old access token has been revoked.

This requires you to add your token in APIKeys.plist — everyone will need to cp Examples/APIKeys.EXAMPLE.plist Examples/APIKeys.plist, then insert their token in that file under the MGLMapboxAccessToken key.

Switched to a plaintext mapbox_access_token file.

/cc @jmkiley @captainbarbosa @1ec5

[1ec5]

I prefer this approach to keeping an access token private, but that's largely a matter of personal preference. I would still prefer that a plain text file be used instead of a plist, because the plist format (dictionary containing a particular key) requires trial and error.

[friedbunny]

@1ec5 I’ll give your method a try tomorrow — the plist approach makes more sense when there’s more than one key, which isn’t the case here.

[friedbunny]

@1ec5 Switched to your approach in d3f8448, defaulting to a git-ignored local file and falling back to ~/.mapbox.