[NodeJS]安裝NodeJS同host佢
            無聊又搞個telegram bot,因爲用nodejs寫所以姑且幾低啲嘢:(
首先喺安裝,Linux系列請:
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.6/install.sh | bash`   
or你鍾意wget多啲嘅話:
 `wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.6/install.sh | bash`   
mac嘅話可以透過homebrew 安裝:
 `brew install nvm`   
之後edit bash profile。
Linux:
 `nano ~/.bashrc`   
Mac:
 `nano ~/.bash_profileb`   
加入:
 `export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm`   
重新載入設定。
Linux:
 `source  ~/.bashrc`   
Mac:
 `source ~/.bash_profile`   
搜尋可使用版本:
 `nvm ls-remote`   
安裝自定版本,以v9.0.0爲例:
 `nvm install v9.0.0`   
確定真的安裝好了:
 `nvm ls`   
首先init個project:
 `cd <your project path>`   
init個project(會有指示,跟住做就係):
 `npm init`   
總之寫啲code後然後執行嘅話:
 `node index.js`   
要長期執行嘅話可以透過pm2做deamon執行,安裝:
 `npm install pm2 -g`   
令pm2會自動執行:
 `pm2 startup ubuntu`   
host 個 app:
 `pm2 start index.js`   
查看host咗嘅app嘅狀態:
 `pm status`   
停個app:
 `pm stop index`   
移除個app:
 `pm delete index
Ref:
如何在 Mac OSX Lion 上設定 node.js 的開發環境 | DreamersLab
http://dreamerslab.com/blog/tw/how-to-setup-a-node-js-development-environment-on-mac-osx-lion/
Telegram Bot 開發起手式 – Peng Jie’s Blog
https://neighborhood999.github.io/2016/07/19/Develop-telegram-bot/
creationix/nvm: Node Version Manager -GitHub
https://github.com/creationix/nvm
How To Set Up a Node.js Application for Production on Ubuntu 14.04 | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-a-node-js-application-for-production-on-ubuntu-14-04
