Add a Hello World example
Add a Hello World example

lxfschr/noflo,saurabhsood91/noflo,lxfschr/noflo,npmcomponent/noflo-noflo,jonnor/noflo,jonnor/noflo,trustmaster/noflo,trustmaster/noflo,noflo/noflo,saurabhsood91/noflo