Re-order default search locations and enable expansion of ~ to the users home directory

Cherry-picking from openaps#50
Conflicts:
	openaps/config.py

Author: cjo20

openaps/config.py

@@ -1,7 +1,7 @@
 
 from ConfigParser import SafeConfigParser
 import re
-
+import os
 
 class Config (SafeConfigParser):
   OPTCRE = re.compile(
@@ -35,7 +35,7 @@ def remove_device (self, device):
     section = device.section_name( )
     self.remove_section(section)
   @classmethod
-  def Read (klass, name=None, defaults=['openaps.ini', '~/.openaps.ini', '/etc/openaps/openaps.ini']):
+  def Read (klass, name=None, defaults=["/etc/openaps/openaps.ini", os.path.expanduser("~/.openaps.ini"), 'openaps.ini']):
     config = Config( )
     if name:
       config.set_ini_path(name)