feature #4681 adding note to assetic cache busting (weaverryan)

This PR was merged into the 2.5 branch.

Discussion
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adding note to assetic cache busting

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no
| Applies to    | 2.5+
| Fixed tickets | n/a

Hi guys!

Just a small note after #4449. I don't know anything about this feature, so I thought we'd at least link to the pull request. But I also wanted people to know that there is another way that's more documented. Really, I don't know why we have 2 ways - or is the cache-busting different between these 2?

Thanks!

Commits
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44b03ac adding note to assetic cache busting

Author: weaverryan

reference/configuration/assetic.rst

@@ -49,6 +49,9 @@ Full Default Configuration
                 # An array of named filters (e.g. some_filter, some_other_filter)
                 some_filter:                 []
             workers:
+                # see https://github.com/symfony/AsseticBundle/pull/119
+                # Cache can also be busted via the framework.templating.assets_version
+                # setting - see the "framework" configuration section
                 cache_busting:
                     enabled:              false
             twig: