Make migrations more verbose and time migrations

lib/migrator.js

@@ -53,16 +53,26 @@ module.exports = (function() {
             migrations.reverse()
           }
 
+          if (migrations.length === 0) {
+            self.options.logging("There are no pending migrations.")
+          } else {
+            self.options.logging("Running migrations...")
+          }
           migrations.forEach(function(migration) {
+            var migrationTime
             chainer.add(migration, 'execute', [options], {
               before: function(migration) {
                 if (self.options.logging !== false) {
-                  self.options.logging('Executing migration: ' + migration.filename)
+                  self.options.logging(migration.filename)
                 }
+                migrationTime = process.hrtime()
               },
               after: function(migration) {
+                migrationTime = process.hrtime(migrationTime)
+                migrationTime = Math.round( (migrationTime[0] * 1000) + (migrationTime[1] / 1000000));
+
                 if (self.options.logging !== false) {
-                  self.options.logging('Executed migration: ' + migration.filename)
+                  self.options.logging('Completed in ' + migrationTime + 'ms')
                 }
               },
               success: function(migration, callback) {