Create onesignal-cli.gemspec

This gemspec will be built and used in our homebrew formula instead of bundler. We no longer need bundler for homebrew installs since we can run gem install onesignal-cli-x.x.x.gem which installs dependencies.

We will keep bundler for running locally since we want to keep the rspec dependency local only.

onesignal-cli.gemspec

@@ -0,0 +1,25 @@
+# encoding: UTF-8
+require 'date'
+
+Gem::Specification.new do |s|
+  s.name     = "onesignal-cli"
+  s.version  = '1.0.0'
+  s.date     = Date.today
+  s.license  = "MIT"
+  s.email    = ["[email protected]", "[email protected]"]
+  s.homepage = "https://onesignal.com"
+  s.authors  = ["Josh Kasten", "Elliot Mawby"]
+
+  s.summary     = "OneSignal's Ruby CLI"
+  s.description = "Ruby Gem for OneSignal's Ruby Command Line Interface."
+
+  s.files = Dir["lib/**/*.rb"] + %w{ bin/onesignal }
+
+  s.executables   = %w{ onesignal }
+  s.require_paths = %w{ lib }
+
+  s.add_runtime_dependency 'clamp'
+  s.add_runtime_dependency 'xcodeproj'
+
+  s.required_ruby_version = '>= 2.4'
+end