Add XMLBear in .coafile

[co-robo]

Add XMLBear to repository and fix errors raised by coala.
label: difficulty/low
Opened by @aashutoshrathi at Gitter

[prashant0598]

@Makman2 I would like to work on this issue. how should i proceed?

[Makman2]

1. the issue assigned, however: @LUCIFER24 you working o nthis issue?
2. @prashant0598 please read our newcomer guide ;)

[prashant0598]

@Makman2 i would like to work on this issue

[DivyeshPuri]

@Makman2 Yes I am working. I ran into some trouble with my laptop thats why was unable to do it.
Sorry for the delay.

[aashutoshrathi]

@Makman2 What is the point of rushing for this PR, as all PRs will be blocked till Travis isn't fixed right?

[Makman2]

@aashutoshrathi I'm not rushing, just confirming if it's worked on. If not, the issue can be reassigned (even if Travis rultor is not working).

[Mohit17067]

Can I work on this if no one's working?

[aashutoshrathi]

Yes, I think you can as this is stale from 2 months.