whitespace fixes

README.rst

@@ -81,7 +81,7 @@ A simple example that demonstrates most of the features: ::
  # that contains the search term (routing-style lookup)
  rnode = rtree.search_best("10.123.45.6")
 
- # Worst-search will return the shortest matching prefix
+ # Worst-search will return the shortest matching prefix
  # that contains the search term (inverse routing-style lookup)
  rnode = rtree.search_worst("10.123.45.6")
 
@@ -99,7 +99,7 @@ A simple example that demonstrates most of the features: ::
  # Use the nodes() method to return all RadixNodes created
  nodes = rtree.nodes()
  for rnode in nodes:
-  print rnode.prefix
+ print rnode.prefix
 
  # The prefixes() method will return all the prefixes (as a
  # list of strings) that have been entered