Create gemspec and make project work well with bundler

Gemfile

@@ -0,0 +1,4 @@
+source "http://rubygems.org"
+
+# Specify your gem's dependencies in callisto.gemspec
+gemspec

Gemfile.lock

@@ -0,0 +1,16 @@
+PATH
+  remote: .
+  specs:
+    kpeg (0.1)
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    rake (0.8.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  kpeg!
+  rake

kpeg.gemspec

@@ -0,0 +1,20 @@
+# -*- encoding: utf-8 -*-
+$:.push File.expand_path("../lib", __FILE__)
+require "kpeg/version"
+
+Gem::Specification.new do |s|
+  s.name        = "kpeg"
+  s.version     = KPeg::VERSION
+  s.platform    = Gem::Platform::RUBY
+  s.authors     = ["Evan Phoenix"]
+  s.email       = ["evan@fallingsnow.net"]
+  s.homepage    = "https://github.com/evanphx/kpeg"
+  s.summary     = %q{Peg-based Code Generator}
+#  s.description = %q{TODO: Write a gem description}
+
+  s.files         = `git ls-files`.split("\n")
+  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  s.require_paths = ["lib"]
+  s.add_development_dependency "rake"
+end

lib/kpeg/version.rb

@@ -0,0 +1,3 @@
+module KPeg
+  VERSION = "0.1"
+end