wrote basic SimpleConfig docstring

lib/simple_config.py

@@ -7,7 +7,14 @@ from version import ELECTRUM_VERSION, SEED_VERSION
 
 
 class SimpleConfig:
+"""
 
+The SimpleConfig class is responsible for handling operations involving
+configuration files.  The constructor reads and stores the system and 
+user configurations from electrum.conf into seperate dictionaries within
+a SimpleConfig instance then reads the wallet file.
+
+"""
     def __init__(self, options={}):
 
         # system conf, readonly