changed display_id to display_name as this call was deprecated

modules/Bio/EnsEMBL/Lite/SNPAdaptor.pm

@@ -108,8 +108,8 @@ sub fetch_all_by_Slice {
         if(!$link) {
           $link = Bio::EnsEMBL::DBEntry->new_fast
             ({'dbname' => $link_db,
-              'primary_id' => $link_id,
-              'display_id' => $link_id});
+              'primary_id'   => $link_id,
+              'display_name' => $link_id});
           $link_cache{"$link_db:$link_id"} = $link;
         }
 

modules/Bio/EnsEMBL/SNP.pm

@@ -147,10 +147,10 @@ sub source_version {
 }
 
 
-=head2 display_id
+=head2 display_name
 
   Arg [1]    : none
-  Example    : print $snp->id();
+  Example    : print $snp->display_name();
   Description: This method returns a string that is considered to be
                the 'display' identifier.  For snps this is the
                returns the same thing as the id method.
@@ -160,7 +160,7 @@ sub source_version {
 
 =cut
 
-sub display_id {
+sub display_name {
   my $self = shift;
   return $self->id();
 }