Change finder to allow user to launch command even in non root dir

Author: stephpy

README.md

@@ -3,6 +3,8 @@ Vim-php-cs-fixer by steph_py
 
 Integrate [php-cs-fixer](https://github.com/fabpot/PHP-CS-Fixer) created by fabpot.
 
+This plugin will execute the php-cs-fixer fix command on the directory where you launch the command.
+
 Options available:
 
 ```viml
@@ -15,8 +17,6 @@ let g:php_cs_fixer_default_mapping = 1        " Enable the mapping by default
 
 Default mapping is `<leader>pcd`
 
-**You have to launch this command at the root of your project**
-
 If you want to change it:
 
 ```viml

plugin/php-cs-fixer.vim

@@ -7,7 +7,7 @@ if (!exists("g:php_cs_fixer_level"))
 endif
 
 if (!exists("g:php_cs_fixer_finder"))
-    let g:php_cs_fixer_finder = "Symfony21Finder"
+    let g:php_cs_fixer_finder = "SymfonyFinder"
 endif
 
 if (!exists("g:php_cs_fixer_php_path"))