Merge pull request #374 from Immediate-Mode-UI/clib-mit

clib: Add licensing information

clib.json

@@ -4,5 +4,6 @@
   "repo": "Immediate-Mode-UI/Nuklear",
   "description": "A small ANSI C gui toolkit",
   "keywords": ["gl", "ui", "toolkit"],
+  "license": "MIT, Unlicense",
   "src": ["nuklear.h"]
 }