+ add <i> handler

lib/Text/Dokuwiki/Render/Markdown.pm

@@ -44,6 +44,7 @@ sub ul { my $self = shift; $self->_list(@_); };
 sub ol { my $self = shift; $self->_list(@_); };
 
 sub b  { my $self = shift; $self->_wrap('**', @_); } # bold
+sub i  { my $self = shift; $self->_wrap('*',  @_); } # italics
 sub u  { my $self = shift; $self->_wrap('*',  @_); } # underline, replace with italics
 
 sub div {