doc: Removed references to Node.js lower than 10.x. (#709)

* Removed references to Node.js lower than 10.x.

README.md

@@ -21,7 +21,7 @@ It is important to remember that *other* Node.js interfaces such as
 `libuv` (included in a project via `#include <uv.h>`) are not ABI-stable across
 Node.js major versions. Thus, an addon must use N-API and/or `node-addon-api`
 exclusively and build against a version of Node.js that includes an
-implementation of N-API (meaning a version of Node.js newer than 6.14.2) in
+implementation of N-API (meaning an active LTS version of Node.js) in
 order to benefit from ABI stability across Node.js major versions. Node.js
 provides an [ABI stability guide][] containing a detailed explanation of ABI
 stability in general, and the N-API ABI stability guarantee in particular.
@@ -47,14 +47,21 @@ to ideas specified in the **ECMA262 Language Specification**.
 - **[Contributors](#contributors)**
 - **[License](#license)**
 
-## **Current version: 2.0.0**
+## **Current version: 3.0.0**
 
 (See [CHANGELOG.md](CHANGELOG.md) for complete Changelog)
 
 [![NPM](https://nodei.co/npm/node-addon-api.png?downloads=true&downloadRank=true)](https://nodei.co/npm/node-addon-api/) [![NPM](https://nodei.co/npm-dl/node-addon-api.png?months=6&height=1)](https://nodei.co/npm/node-addon-api/)
 
 <a name="setup"></a>
 
+node-addon-api is based on [N-API](https://nodejs.org/api/n-api.html) and supports using different N-API versions. 
+This allows addons built with it to run with Node.js versions which support the targeted N-API version. 
+**However** the node-addon-api support model is to support only the active LTS Node.js versions. This means that
+every year there will be a new major which drops support for the Node.js LTS version which has gone out of service.
+
+The oldest Node.js version supported by the current version of node-addon-api is Node.js 10.x.
+
 ## Setup
   - [Installation and usage](doc/setup.md)
   - [node-gyp](doc/node-gyp.md)

doc/creating_a_release.md

@@ -13,7 +13,7 @@ tools:
 
 * [Changelog maker](https://www.npmjs.com/package/changelog-maker)
 
-If not please follow the instruction reported in the tool's documentation to 
+If not please follow the instruction reported in the tool's documentation to
 install it.
 
 ## Publish new release
@@ -27,13 +27,13 @@ new release. Give people some time to comment or suggest PRs that should land fi
 
 * Update the version in **package.json** appropriately.
 
-* Update the [README.md](https://github.com/nodejs/node-addon-api/blob/master/README.md) 
+* Update the [README.md](https://github.com/nodejs/node-addon-api/blob/master/README.md)
 to show the new version as the latest.
 
 * Generate the changelog for the new version using **changelog maker** tool. From
 the route folder of the repo launch the following command:
 
-    ```bash 
+    ```bash
     > changelog-maker
     ```
 * Use the output generated by **changelog maker** to pdate the [CHANGELOG.md](https://github.com/nodejs/node-addon-api/blob/master/CHANGELOG.md)
@@ -43,8 +43,8 @@ following the style used in publishing the previous release.
 
 * Validate all tests pass by running npm test on master.
 
-* Use **[CI](https://ci.nodejs.org/view/x%20-%20Abi%20stable%20module%20API/job/node-test-node-addon-api/)**
-to validate tests pass for latest 11, 10, 8, 6 releases (note there are still some issues on SmartOS and
+* Use **[CI](https://ci.nodejs.org/view/x%20-%20Abi%20stable%20module%20API/job/node-test-node-addon-api-new/)**
+to validate tests pass (note there are still some issues on SmartOS and
 Windows in the testing).
 
 * Do a clean checkout of node-addon-api.