Added RockSpec; Moved demo application; README fixes

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "loveframes"]
-	path = loveframes
+	path = demo/loveframes
 	url = https://github.com/NikolaiResokav/LoveFrames

README.md

@@ -1,10 +1,18 @@
 sfxr.lua
 ========
-[![Build Status](https://travis-ci.org/nucular/sfxrlua.svg?branch=master)](https://travis-ci.org/nucular/sfxrlua)
 
 A port of the sfxr sound effect synthesizer to pure Lua, designed to be used
-together with the *awesome* Löve game framework.
+together with the *awesome* [LÖVE](https://love2d.org) game framework.
 
+Demo
+----
+
+To run the demo application you first need to download
+[LoveFrames](https://github.com/NikolaiResokav/LoveFrames) as a submodule:
+```
+git submodule init
+love demo
+```
 
 Example usage
 -------------

rockspec/sfxrlua-scm-1.rockspec

@@ -0,0 +1,25 @@
+package = "sfxrlua"
+version = "scm-1"
+source = {
+  url = "git://github.com/nucular/sfxrlua",
+  branch = "master"
+}
+description = {
+  summary = "A port of the sfxr sound effect synthesizer to Lua",
+  detailed = [[
+    A port of the sfxr sound effect synthesizer to pure Lua, designed to be used
+    together with the awesome LÖVE game framework.
+  ]],
+  homepage = "https://github.com/nucular/sfxrlua",
+  license = "MIT/X11"
+}
+dependencies = {
+  "lua ~> 5.1"
+  -- bitop?
+}
+build = {
+  type = "builtin",
+  modules = {
+    "sfxr" = "sfxr.lua"
+  }
+}