cloud deply procedure; process manager pm2 for autostart

installation.md

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+# install on cloudserver
+incl autostart via pm2
+
+dependencies:
+```
+sudo apt-get update
+sudo apt-get upgrade
+apt install git wget lynx
+
+curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+sudo apt-get install -y nodejs
+node --version
+npm --version
+
+git clone https://github.com/Nexuist/CoinMarketCapAPI Nexuist_CoinMarketCapAPI
+cd Nexuist_CoinMarketCapAPI/
+sed -i 's/127.0.0.1/0.0.0.0/g' main.js
+npm install
+npm start
+```
+
+Try whether it is answering:
+```
+lynx http://localhost:8080
+lynx http://try.your.server.ip:8080
+```
+
+autostart:
+```
+npm install pm2 -g
+
+cd Nexuist_CoinMarketCapAPI/
+pm2 start main.js
+pm2 list
+pm2 logs
+pm2 startup
+pm2 save
+
+sudo reboot
+```
+
+
+
+## optional hack to get page 2
+
+I have [found a simple hack](https://github.com/Nexuist/CoinMarketCapAPI/issues/7#issuecomment-451639060) to also get the coins from page 2
+
+```
+cp -r Nexuist_CoinMarketCapAPI  Nexuist_CoinMarketCapAPI_2
+cd Nexuist_CoinMarketCapAPI_2/
+
+nano lib/CoinCrawler.js 
+```
+change 'http://coinmarketcap.com/' to 'http://coinmarketcap.com/2'
+
+then increment the port number so that page 1 & page 2 do not collide:
+```
+nano main.js 
+```
+change 8080 to 8081
+
+now install and run:
+```
+rm node_modules -rf
+npm install
+npm start
+```
+
+then you get page 2 on http://try.your.ip.address:8081
+
+To not miss any coins (which move from page 1 to page 2 or vice versa), it is important that both services 8080 and 8081 are started at the same time.  Do the same as above with pm2, and reboot.