ionic serve -p 8888 - reassign the port number to 8888
serve [options] ................................. Start a local server for development testing dev/testing
[--consolelogs|- c] ................................. Enter app's console to ionic's console display
[--serverlogs|-s] ........ ............ Enter the local server log to the ionic console display
[--port|-p] ...................... .......... Specify the development port of the local server (8100 default)
[--livereload-port|-r] ...... Automatically refresh the port (35729 default)
[--nobrowser|-b] ......................... Do not automatically open browser
[--nolivereload|-d] .. ................. do not use livereload
[--noproxy|-x] ...................... .... do not use proxy
[--address] ................................. open with specified host address
[--all |-a] .................................Start debugging on all addresses (0.0.0.0)
[--browser|-w ] ................................. Specifies the browser to use (safari, firefox, chrome)
[--browseroption|-o] ................. Specify a specific path to open (/#/tab/dash)
[--lab|-l] .. ................................. open tests on multiple platforms and multiple screens
[--nogulp] ...... ........................... Do not run gulp when server starts
[--platform|-t] ..................... ........... The specified platform emulation is turned on (ios/android)