Fixes #370. Allow Promises in allOptions for beautification

src/beautifiers/index.coffee

@@ -288,6 +288,8 @@ module.exports = class Beautifiers
 
 
     beautify : (text, allOptions, grammar, filePath, {onSave} = {}) ->
+        return Promise.all(allOptions)
+        .then((allOptions) =>
             return new Promise((resolve, reject) =>
                 logger.info('beautify', text, allOptions, grammar, filePath)
                 logger.verbose(allOptions)
@@ -477,6 +479,10 @@ module.exports = class Beautifiers
                         })
                         return resolve( null )
                         )
+
+            )
+
+
     findFileResults : {}