DEV: bin/ember-cli standalone by default (#13344)

DEV: bin/ember-cli standalone by default (#13344)

diff --git a/bin/ember-cli b/bin/ember-cli
index 0fc2496..53da667 100755
--- a/bin/ember-cli
+++ b/bin/ember-cli
@@ -48,7 +48,7 @@ end
 
 system "yarn -s install --cwd #{yarn_dir}"
 
-if (ARGV - ["--unicorn", "-"]).length < 2
+if ARGV.include?("-u") || ARGV.include?("--unicorn")
   unicorn_pid = spawn(__dir__ + "/unicorn")
 
   Thread.new do

GitHub sha: 513bfc3a6cac80fe5f8806630131cfce22fddb38

This commit appears in #13344 which was approved by CvX. It was merged by pmusaraj.