correct the version of node required (github#215)

* correct the version of node required

* clarify Node.js 12 and 14 requirements and enviroments

* 12 or 14

Co-authored-by: Zeke Sikelianos <[email protected]>

Author: jeffmcaffer

contributing/development.md

@@ -8,7 +8,7 @@ This site is powered by Node.js! :sparkles: :turtle: :rocket: :sparkles:
 
 It runs on macOS, Windows, and Linux environments.
 
-You'll need **Node.js v14** to run the site. If you're using [`nodenv`](https://github.com/nodenv/nodenv), read the [`nodenv` docs](#nodenv) for instructions on switching Node.js versions. If you're not using `nodenv`, the best way to install Node.js is to [download the LTS installer from nodejs.org](https://nodejs.org).
+You'll need Node.js version 12 or 14 to run the site. To install Node.js, [download the "LTS" installer from nodejs.org](https://nodejs.org). If you're using [`nodenv`](https://github.com/nodenv/nodenv), read the [`nodenv` docs](#nodenv) for instructions on switching Node.js versions. 
 
 Once you've installed Node.js (which includes the popular `npm` package manager), open Terminal and run the following:
 
@@ -52,4 +52,4 @@ For more info about working with this site, check out these READMEs:
 - [middleware/README.md](../middleware/README.md)
 - [script/README.md](../script/README.md)
 - [stylesheets/README.md](../stylesheets/README.md)
-- [tests/README.md](../tests/README.md)
+- [tests/README.md](../tests/README.md)

contributing/node-versions.md

@@ -1,6 +1,8 @@
 # Node Versions
 
-The site currently runs on Node.js v14, the [Active LTS version](https://nodejs.org/en/about/releases/) from 2020-10-27 to 2021-10-26.
+In [development](contributing/development.md) enviroments this site will run on Node.js versions `12 - 14`.
+
+In [staging and production](contributing/deployments.md) environments this site runs on Node.js 14, the [Active LTS version](https://nodejs.org/en/about/releases/) from 2020-10-27 to 2021-10-26).
 
 When updating to a new Node.js version, consider the following files: