imasif/NodeJS multiple version management Linux or Mac

## NodeJS multiple version management Linux or Mac
1. We will be using 'n' for it. But before using `n` we need to install make;
  $ sudo apt-get install make
2. Installing `n`:
  $ curl -L https://git.io/n-install | bash
sets both PREFIX and N_PREFIX to $HOME/n, installs n to $HOME/n/bin,
modifies the initialization files of supported shells to export N_PREFIX and add $HOME/n/bin to the PATH,
and installs the latest stable node version.

3. . ~/.bashrc (reload .bashrc file)

##for mac it's simple:
Since you probably already have node, the easiest way to install n is through npm:
$ npm install -g n

Everything else can be found here:
https://github.com/tj/n#installingactivating-versions
	1. We will be using 'n' for it. But before using `n` we need to install make;
	$ sudo apt-get install make
	2. Installing `n`:
	$ curl -L https://git.io/n-install \| bash
	sets both PREFIX and N_PREFIX to $HOME/n, installs n to $HOME/n/bin,
	modifies the initialization files of supported shells to export N_PREFIX and add $HOME/n/bin to the PATH,
	and installs the latest stable node version.

	3. . ~/.bashrc (reload .bashrc file)

	##for mac it's simple:
	Since you probably already have node, the easiest way to install n is through npm:
	$ npm install -g n

	Everything else can be found here:
	https://github.com/tj/n#installingactivating-versions