update snarfuri to exclude command-line lines

* Exclude lines from being matched by snarfuri that begin with .
* Enable posted time display by the posted module

modules/head.py

@@ -88,12 +88,12 @@ noteuri.priority = 'low'
 
 
 def snarfuri(phenny, input):
-    uri = input.group(1)
+    uri = input.group(2)
     title = gettitle(phenny, input, uri)
 
     if title:
         phenny.msg(input.sender, title)
-snarfuri.rule = r'.*(http[s]?://[^<> "\x01]+)[,.]?'
+snarfuri.rule = r'([^\.].*)?(http[s]?://[^<> "\x01]+)[,.]?'
 snarfuri.priority = 'low'
 snarfuri.thread = True
 
@@ -195,4 +195,4 @@ def gettitle(phenny, input, uri):
 
 
 if __name__ == '__main__':
-    print(__doc__.strip())
+    print(__doc__.strip())