Sublime text hide hidden files from the sidebar

Open preferences by pressing Command + ","

And paste the following snippet

"file_exclude_patterns":
	[
		"*.svn",
		"*.git",
		"*.hg",
		"CVS",
		"*tmp/cache",
		"*._*",
		"*.DS_Store"
	],
	"folder_exclude_patterns":
	[
		".sass-cache",
		".svn",
		".git"
	],
	"font_size": 14.0,
	"ignored_packages":
	[
		"Vintage"
	]

Taken from: https://gist.github.com/supawaza/8009192