Clean at requires, and check for spec task

Rakefile

@@ -1,12 +1,10 @@
-require 'rubygems'
-require 'rubygems/specification'
 require 'rake'
 require 'rake/gempackagetask'
-require 'spec/rake/spectask'
 
 GEM = "gemhub"
 GEM_VERSION = "0.5.0"
 SUMMARY = "Simple gem creation"
+DESCRIPTION = "Create your gems in a spartan way!"
 AUTHOR = "Diego Carrion"
 EMAIL = "dc.rec1@gmail.com"
 HOMEPAGE = "http://www.diegocarrion.com"
@@ -16,6 +14,7 @@ spec = Gem::Specification.new do |s|
   s.version = GEM_VERSION
   s.platform = Gem::Platform::RUBY
   s.summary = SUMMARY
+  s.description = DESCRIPTION
   s.require_paths = ['app_generators', 'bin', 'lib']
   s.files = FileList['app_generators/**/*', 'bin/*', 'lib/**/*.rb', '[A-Z]*'].to_a
   s.executables = ["gemhub"]
@@ -27,11 +26,6 @@ spec = Gem::Specification.new do |s|
   s.homepage = HOMEPAGE
 end
 
-Spec::Rake::SpecTask.new do |t|
-  t.spec_files = FileList['spec/**/*_spec.rb']
-  t.spec_opts = %w(-fs --color)
-end
-
 Rake::GemPackageTask.new(spec) do |pkg|
   pkg.gem_spec = spec
 end
@@ -47,3 +41,16 @@ task :make_spec do
     file.puts spec.to_ruby
   end
 end
+
+begin
+  require 'spec/rake/spectask'
+  Spec::Rake::SpecTask.new do |t|
+    t.spec_files = FileList['spec/**/*_spec.rb']
+    t.spec_opts = %w(-fs --color)
+  end
+rescue LoadError => ex
+  desc 'rspec rake task not available (rspec not installed)'
+  task :spec do
+    abort 'RSpec rake task is not available. Be sure to install rspec as a gem.'
+  end
+end