feature symfony#25415 [FrameworkBundle] Add atom editor to ide config (lexcast)

This PR was merged into the 4.1-dev branch.

Discussion
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[FrameworkBundle] Add atom editor to ide config

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

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Support for uri handler (added [here](atom/atom#15935)) in Atom editor is still in the current beta version. This works only for windows and mac.

Commits
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191b837 [FrameworkBundle] Add atom editor to ide config

Author: fabpot

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -168,6 +168,7 @@ public function load(array $configs, ContainerBuilder $container)
                     'emacs' => 'emacs://open?url=file://%%f&line=%%l',
                     'sublime' => 'subl://open?url=file://%%f&line=%%l',
                     'phpstorm' => 'phpstorm://open?file=%%f&line=%%l',
+                    'atom' => 'atom://core/open/file?filename=%%f&line=%%l',
                 );
                 $ide = $config['ide'];