fixed incompatibility with old LR

.travis.yml

@@ -3,6 +3,6 @@ language: c
 install:
   - sudo apt-get install luarocks
   - sudo luarocks install busted
-  - sudo luarocks make rockspecs/largparse-wip-1.rockspec
+  - sudo luarocks make rockspecs/largparse-lrcompat-1.rockspec
 
 script: "busted spec"

rockspecs/largparse-lrcompat-1.rockspec

@@ -0,0 +1,22 @@
+package = "largparse"
+version = "lrcompat-1"
+source = {
+   url = "src"
+}
+description = {
+   summary = "*** please specify description summary ***",
+   detailed = "*** please enter a detailed description ***",
+   homepage = "*** please enter a project homepage ***",
+   license = "MIT/X11"
+}
+dependencies = {
+   "lua >= 5.1, < 5.3"
+}
+build = {
+   type = "builtin",
+   modules = {
+      largparse = "src/largparse.lua",
+      ["largparse.state"] = "src/state.lua",
+      ["largparse.utils"] = "src/utils.lua"
+   }
+}