adds executable to create project without need to know the template path

bin/gnarus_activity

@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+lib = File.expand_path("../../lib", __FILE__)
+$:.unshift lib unless $:.include?(lib)
+
+template = File.expand_path("../../template.rb", __FILE__)
+
+if !ARGV[0]
+  puts "qual o nome do projeto?"
+else
+  command = "rails new #{ARGV[0]} -m #{template}"
+  puts "executando: #{command}"
+  system(command)
+end

gnarus_exercise.gemspec

@@ -20,4 +20,6 @@ Gem::Specification.new do |s|
   # s.add_dependency "jquery-rails"
 
   s.add_development_dependency "sqlite3"
+
+  s.executables  = ["gnarus_activity"]
 end