update note about Python2/3 in README

README.md

@@ -269,7 +269,7 @@ In tmux it is 'windows' that have names, whereas in iTerm each pane in a window
 
 iTermocil works for iTerm 2+, but the script support is better in iTerm 2.9 beta so things run a bit faster/cleaner with iTerm 2.9+. If using beta builds you should grab the [latest nightly](https://iterm2.com/nightly/latest), as the 2.9.20150626 'recommended beta' build does not have the required script hooks for iTermocil to work (and I have no plans to kludge something just for an incomplete beta that will never be released).
 
-Currently, everything is Python 2 and so if you are using Python 3 by default you may need to tweak the #! line.
+Starting with version 1.0.0, iTermocil uses Python3. If you need iTermocil for Python2, please use [0.2.1](https://github.com/TomAnthony/itermocil/releases/tag/0.2.1).
 
 ## Shell autocompletion