Added the schema_filter option to the reference

[peterrehm]

Q	A
Doc fix?	yes
New docs?	no
Applies to	?
Fixed tickets	-

Shall the optional setting be added to XML as well? How?
I am unsure if it is actually to which version this relates to the DoctrineBundle.

Relates to doctrine/migrations#101

[weaverryan]

👍 I didn't know this existed :)

[peterrehm]

Hehe this is why I suggested yesterday on twitter to add the DoctrineBundle documentation on to the symfony bundle documentation as well. But this will take some time according to @javiereguiluz.

[xabbuh]

@peterrehm 👍 for adding the XML example (of possible).

[weaverryan]

@xabbuh Yea, but we don't show the XML version of the full configuration, so there's no spot for it (and I don't really want to start doing the full XML for this).

[xabbuh]

@weaverryan Yeah, you're right. I didn't spot that we are talking about the full documentation reference.

[peterrehm]

And it is hard to add it optionally only

[weaverryan]

Merged - thanks a lot Peter!