Test RioLua build on Appveyor

appveyor.yml

@@ -0,0 +1,19 @@
+version: 1.0.{build}
+
+shallow_clone: true
+
+environment:
+  matrix:
+  - LUA: 5.1
+  - LUA: 5.2
+  - LUA: 5.3
+
+configuration: MinGW
+
+platform: x86
+
+before_build: set PATH=C:\mingw\bin;%PATH%
+
+build_script: python hererocks.py here --lua "%LUA%" --verbose
+
+test_script: here\bin\lua -v