Minor change based on danvk's comments in merge 181.
if (typeof(attrs[opt]) != 'undefined') {
Dygraph.warn("Option " + opt + " is deprecated. Use the " +
new_opt + " option for the " + axis + " axis instead. " +
- "(e.g. { axes : { " + axis + " : { " + new_opt + " : ... } } }");
+ "(e.g. { axes : { " + axis + " : { " + new_opt + " : ... } } } " +
+ "(see http://dygraphs.com/per-axis.html for more information.");
set(axis, new_opt, attrs[opt]);
delete my_attrs[opt];
}