feature: new transport (#2)

* feat: new log api

* chore: small changes

* chore: small changes

lib/winston-loggly.js

@@ -114,16 +114,14 @@ const validateMetadata = (meta) => {
 };
 
 //
-// ### function log (level, msg, [meta], callback)
-// #### @level {string} Level at which to log the message.
-// #### @msg {string} Message to log
-// #### @meta {Object} **Optional** Additional metadata to attach
+// ### function log (metadata, callback)
+// #### @metadata {Object} Information to attach.
 // #### @callback {function} Continuation to respond to when complete.
-// Core logging method exposed to Winston. Metadata is optional.
+// Core logging method exposed to Winston.
 //
-Loggly.prototype.log = function (level, msg, meta, callback) {
+Loggly.prototype.log = function (metadata, callback) {
 
-  const data = validateMetadata(meta);
+  const data = validateMetadata(metadata);
 
   if (this.silent) {
     return callback(null, true);
@@ -134,14 +132,11 @@ Loggly.prototype.log = function (level, msg, meta, callback) {
   }
 
   if (this.stripColors) {
-    msg = ('' + msg).replace(code, '');
+    data.message = ('' + data.message).replace(code, '');
   }
 
   const self = this;
 
-  data.level = level;
-  data.message = msg || data.message;
-
   //
   // Helper function for responded to logging.
   //
@@ -150,8 +145,8 @@ Loggly.prototype.log = function (level, msg, meta, callback) {
     callback(err, true);
   }
 
-  return (meta && meta.tags)
-    ? this.client.log(data, meta.tags, logged)
+  return (data && data.tags)
+    ? this.client.log(data, data.tags, logged)
     : this.client.log(data, logged);
 };