tools: sync: create .config directory if it doesn't exist

tools/socks.sync

@@ -20,6 +20,9 @@ def in_source_tree():
 
 
 def create_sample_config():
+    if not os.path.isdir('.config'):
+        os.mkdir('.config')
+    
     config_file = open(config_filename, mode='w')
     data = {
         'targets': {
@@ -39,7 +42,7 @@ def create_sample_config():
 def read_config():
     config_file = None
     try:
-        config_file = open('sync.json')
+        config_file = open(config_filename)
     except (OSError, FileNotFoundError):
         create_sample_config()
         print(help_str)