[asset pipeline] fixed example
Changed << to += because we are _concatenating_ this new array to the end of config array, NOT pushing this array in it.
|@@ -297,7 +297,7 @@ The default matcher for compiling files will include +application.js+, +applicat|
|-config.assets.precompile << ['admin.js', 'admin.css', 'swfObject.js']|
|+config.assets.precompile += ['admin.js', 'admin.css', 'swfObject.js']|
|Precompiled assets exist on the filesystem and are served directly by your webserver. They do not have far-future headers by default, so to get the benefit of fingerprinting you'll have to update your server configuration to add them.|