Specify node version 10 (mapbox#9389)

Co-Authored-By: Arindam Bose <arindam.bose@mapbox.com>

CONTRIBUTING.md

@@ -9,7 +9,7 @@ Install the Xcode Command Line Tools Package
 xcode-select --install
 ```
 
-Install [node.js](https://nodejs.org/) version 4 or greater
+Install [node.js](https://nodejs.org/) version ^10.15 ( Minimum 10.15 while sticking only to major version 10.0 )
 ```bash
 brew install node
 ```
@@ -31,7 +31,7 @@ yarn install
 
 ### Linux
 
-Install [git](https://git-scm.com/), [node.js](https://nodejs.org/) (version 6 or greater), [GNU Make](http://www.gnu.org/software/make/), and libglew-dev
+Install [git](https://git-scm.com/), [node.js](https://nodejs.org/) (version ^10.15), [GNU Make](http://www.gnu.org/software/make/), and libglew-dev
 ```bash
 sudo apt-get update &&
 sudo apt-get install build-essential git nodejs libglew-dev libxi-dev
@@ -56,7 +56,7 @@ yarn install
 
 ### Windows
 
-Install [git](https://git-scm.com/), [node.js](https://nodejs.org/) (version 4 or greater), [yarn](https://yarnpkg.com/en/docs/install#windows-tab), [npm and node-gyp](https://github.com/Microsoft/nodejs-guidelines/blob/master/windows-environment.md#compiling-native-addon-modules).
+Install [git](https://git-scm.com/), [node.js](https://nodejs.org/) (version ^10.15), [yarn](https://yarnpkg.com/en/docs/install#windows-tab), [npm and node-gyp](https://github.com/Microsoft/nodejs-guidelines/blob/master/windows-environment.md#compiling-native-addon-modules).
 
 Clone the repository
 ```bash