load the config correctly

sshshare/__main__.py

@@ -256,6 +256,7 @@ def main():
     if os.path.exists(configpath):
         with open(configpath,'r') as f:
             configdata = yaml.load(f.read())
+            config.update(configdata)
     else:
         configdata = {}
         configdata['singularity']='singularity'