perf(index): add deprecated for addDependencyTo option

Author: Scrum

index.js

@@ -17,6 +17,11 @@ module.exports = function(options) {
 
                 if (typeof options.addDependencyTo === 'object' &&
                     typeof options.addDependencyTo.addDependency === 'function') {
+                    console.warn([
+                        "addDependencyTo is deprecated in favor of",
+                        "result.messages.dependency; posthtml-loader >= v1.0.1 will",
+                        "automatically add your imported files to webpack's file watcher."
+                    ].join("\n"));
                     options.addDependencyTo.addDependency(src);
                 }
             }