Spec for String#start_with? for empty strings.
Spec for String#start_with? for empty strings.

When using String#start_with?() with an empty search string (e.g.
"foo".start_with?('')) the method should return true. This is already the case
on MRI 2.1.2 and Rubinius 2.2.10 but there was no explicit spec for it.

BanzaiMan/rubyspec,jannishuebl/rubyspec,nobu/rubyspec,wied03/rubyspec,kachick/rubyspec,sgarciac/spec,ruby/rubyspec,ruby/rubyspec,kidaa/rubyspec,iliabylich/rubyspec,bl4ckdu5t/rubyspec,eregon/rubyspec,ruby/spec,nobu/rubyspec,kachick/rubyspec,wied03/rubyspec,BanzaiMan/rubyspec,iliabylich/rubyspec,kachick/rubyspec,eregon/rubyspec,lucaspinto/rubyspec,wied03/rubyspec,benlovell/rubyspec,ruby/spec,jannishuebl/rubyspec,yous/rubyspec,nobu/rubyspec,bl4ckdu5t/rubyspec,sgarciac/spec,ruby/spec,benlovell/rubyspec,lucaspinto/rubyspec,yous/rubyspec,sgarciac/spec,askl56/rubyspec,askl56/rubyspec,eregon/rubyspec,kidaa/rubyspec