imgur-screenshot 1.5.4 (new formula)

https://github.com/jomo/imgur-screenshot
The Imgur-Screenshot uploader for Linux & OS X from imgur.com/tools
"Take screenshot selection, upload to imgur. + more cool things"

formula style fixes:
"with-terminal-notifier" option description changed
empty line between the option and the dependency
tests trimmed down
fixed: `checksum` (line 6) should be put before `head` (line 4)

Closes Homebrew/legacy-homebrew#42068.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Formula/imgur-screenshot.rb

@@ -0,0 +1,19 @@
+class ImgurScreenshot < Formula
+  desc "Take screenshot selection, upload to imgur. + more cool things"
+  homepage "https://github.com/jomo/imgur-screenshot"
+  url "https://github.com/jomo/imgur-screenshot/archive/v1.5.4.tar.gz"
+  sha256 "147fe1c3b3e407d952fa8abbdb9b436192133cf7a56278edc0dd87c2a9c9c430"
+  head "https://github.com/jomo/imgur-screenshot.git"
+
+  option "with-terminal-notifier", "Needed for Mac OS X Notifications"
+
+  depends_on "terminal-notifier" => :optional
+
+  def install
+    bin.install "imgur-screenshot.sh"
+  end
+
+  test do
+    system "#{bin}/imgur-screenshot.sh", "--check"  # checks deps
+  end
+end