Update readme for initialization
Update readme for initialization

Added initialization documentation and how to use with iron:router
Volodymyr-K/meteor-typeahead,sa000/meteor-typeahead,sa000/meteor-typeahead,davidfurlong/meteor-typeahead,davidfurlong/meteor-typeahead,davidfurlong/meteor-typeahead,Volodymyr-K/meteor-typeahead,sa000/meteor-typeahead,Volodymyr-K/meteor-typeahead,sergeyt/meteor-typeahead