added gemspec to not piss off bundler

rubygame.gemspec

@@ -0,0 +1,31 @@
+gem_spec = Gem::Specification.new do |s|
+  s.name     = "rubygame"
+  s.version  = "2.6.2"
+  s.author   = "John Croisant"
+  s.email    = "jacius@gmail.com"
+  s.homepage = "http://rubygame.org/"
+  s.summary  = "Clean and powerful library for game programming"
+  s.rubyforge_project = "rubygame"
+
+  s.files = FileList.new do |fl|
+    fl.include("{lib,samples,doc}/**/*")
+  end
+
+  s.require_paths = ["lib", "lib/rubygame/"]
+
+  s.has_rdoc = true
+  s.extra_rdoc_files = FileList.new do |fl|
+    fl.include "doc/*.rdoc"
+    fl.include "README", "LICENSE", "CREDITS", "ROADMAP", "NEWS"
+  end
+
+  s.required_ruby_version = ">= 1.8"
+  s.add_dependency( "rake", ">=0.7.0" )
+  s.add_dependency( "ruby-sdl-ffi", ">=0.1.0" )
+  s.requirements = ["SDL       >= 1.2.7",
+                    "SDL_gfx   >= 2.0.10 (optional)",
+                    "SDL_image >= 1.2.3  (optional)",
+                    "SDL_mixer >= 1.2.7  (optional)",
+                    "SDL_ttf   >= 2.0.6  (optional)"]
+
+end