Adds straightforward example for feed operator
Adds straightforward example for feed operator

Response to:
The documentation on ==> should get to the point faster #2316

stmuk/doc,stmuk/doc,MasterDuke17/doc,stmuk/doc,MasterDuke17/doc,stmuk/doc,MasterDuke17/doc,perl6/doc,stmuk/doc,MasterDuke17/doc,jonathanstowe/doc,tbrowder/doc,tbrowder/doc,perl6/doc,jonathanstowe/doc,perl6/doc,jonathanstowe/doc,jonathanstowe/doc,tbrowder/doc,jonathanstowe/doc,tbrowder/doc,perl6/doc,perl6/doc