Merge pull request db-migrate#497 from philipyoo/master

fix(typo): small typo in cli help menu

Author: wzrdtales

lib/commands/set-default-argv.js

@@ -70,7 +70,7 @@ module.exports = function(internals, isModule) {
       .boolean('coffee-file')
       .describe('ignore-on-init',
         'Create files that will run only if ignore-on-init in the env is set ' +
-          'to false (currently works onlt with SQL)'
+          'to false (currently works only with SQL)'
       ).boolean('ignore-on-init')
 
     .describe('migration-table',