Add something about clear the cache when template is added

[ip512]

it could save time to many people !

[weaverryan]

Hi Grégory!

Ah, excellent note! This is actually interesting, as it only affects you if you originally call cache:clear, as it creates the cached templates.php file, which causes the issue (and that file, unlike most others, does not auto-refresh itself, as your note indicates). But if you manually clear out your cache directory (i.e. rm -rf app/cache/*) during development, then this is never an issue - as the templates.php file is only created during the cache warming process.

SO, your note here is perfect - I'm just adding the details above in case anyone else comes across your PR :). I did shorten the language a bit to be more direct - hopefully it will be more noticeable that way.

Since this also affects the 2.0 branch, I've patched your change in at sha: 3b7e398

Thanks for your contribution!