Make rake jasmine:ci run specs correctly.

- Will replace rake core_specs.
- Remove obsolete dependencies & files -- most of these were for build tasks we
  are no longer using. Notably, rspec and spec_helper were deleted.

Rakefile

@@ -2,10 +2,7 @@ require "bundler"
 Bundler::GemHelper.install_tasks
 require "json"
 require "jasmine"
-
-Dir["#{File.dirname(__FILE__)}/tasks/**/*.rb"].each do |file|
-  require file
-end
+load "jasmine/tasks/jasmine.rake"
 
 # TODO: Is there better way to invoke this using Jasmine gem???
 desc "Run jasmine core specs in a browser."
@@ -14,28 +11,3 @@ task :core_spec do
 end
 task :default => :core_spec
 
-namespace :jasmine do
-  task :server do
-    port = ENV['JASMINE_PORT'] || 8888
-    jasmine_yml = ENV['JASMINE_YML'] || 'jasmine.yml'
-    Jasmine.load_configuration_from_yaml(File.join(Dir.pwd, 'spec', jasmine_yml))
-    config = Jasmine.config
-    server = Jasmine::Server.new(port, Jasmine::Application.app(config))
-    server.start
-
-    puts "your tests are here:"
-    puts "  http://localhost:#{port}/"
-  end
-
-  desc "Copy examples from Jasmine JS to the gem"
-  task :copy_examples_to_gem do
-    require "fileutils"
-
-    # copy jasmine's example tree into our generator templates dir
-    FileUtils.rm_r('generators/jasmine/templates/jasmine-example', :force => true)
-    FileUtils.cp_r(File.join(Jasmine::Core.path, 'example'), 'generators/jasmine/templates/jasmine-example', :preserve => true)
-  end
-end
-
-desc "Run specs via server"
-task :jasmine => ['jasmine:server']