Update commandline.md (#141)
Update commandline.md (#141)

* Update commandline.md

More information about the --port flag https://github.com/meteor/meteor/issues/4986#issuecomment-308962034

* Formatting tweaks.

Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor