+added contributing.

*moved license badge from top to bottom.

README.md

@@ -1,11 +1,5 @@
 # FANTASY CONSOLES/COMPUTERS
 
-<p xmlns:dct="http://purl.org/dc/terms/">
-  <a rel="license" href="https://creativecommons.org/publicdomain/zero/1.0/">
-    <img src="https://i.creativecommons.org/p/zero/1.0/88x31.png" style="border-style: none;" alt="CC0" />
-  </a>
-</p>
-
 This is a list of available fantasy consoles/computers. Including softwares which simulate virtual hardwares, with limited functionality. And always encourage creating and sharing tiny retro games and programs with built-in languages and tools.
 
 FC | Language | Price & License | Platform | Display
@@ -55,6 +49,14 @@ FC | Language | Price & License | Platform | Display
 [VVpet](https://github.com/gardrek/VVpet) by Gardrek | Lua | Free, [?](https://github.com/gardrek/VVpet) | Löve | 64x64x2, 128x128x4, Configurable
 [yuki-js](https://github.com/nrkn/yuki-js) by Nik Coughlin | JavaScript (subset) | Free, [MIT](https://github.com/nrkn/yuki-js) ![GitHub stars](https://img.shields.io/github/stars/nrkn/yuki-js) | Browser | Configurable
 
+## License
+
+<p xmlns:dct="http://purl.org/dc/terms/">
+  <a rel="license" href="https://creativecommons.org/publicdomain/zero/1.0/">
+    <img src="https://i.creativecommons.org/p/zero/1.0/88x31.png" style="border-style: none;" alt="CC0" />
+  </a>
+</p>
+
 ## Contributing
 
 * Ordered by: alphabet.

contributing.md

@@ -0,0 +1,15 @@
+## Contributing
+
+* Ordered by: alphabet.
+* Language: Mean built-in language(s) for end users, not the language in which it was created.
+* NYOP: Name Your Own Price.
+
+People find it difficult to search for this kind of software to play with, so the definition is relaxed for choosing available consoles. However, it's fairly simple to tell if one is **not** a fantasy console/computer:
+
+1. Hardware such as RaspberryPi and Gamebuino are not
+2. Emulators of real hardware (eg. NES, C64, DOSBox) are not
+3. Generic graphics libraries and game engines are not
+4. Programming IDEs and editors are not
+5. Minecraft is not
+
+As things keep evolving, feel free to update this list, or correct any mistakes. Pull requests are welcome.