Issue 5250 - Add copyright update script

update-copyright/README.md

 # update-copyright
 
-This script accepts a URL to a mercurial index as input. It then:
-* makes a local copy of each repo
-* updates the copyright information on every file to the current year
-* attempts to push the updates
+This script will attempt to update the eyeo copyright information on each
+page of each repo listed on a Mercurial index page.
+By default, running the script will scrape [https://hg.adblockplus.org/](https://hg.adblockplus.org/),
+and then for each repo, it will:
+* make a local copy of the repo
+* update the copyright information on each file to the current year
+* attempt to push the updates to `ssh://hg@hg.adblockplus.org/`
 
 If a user doesn't have permission to push to a repo, the script will make a
 local `repo-name.patch` file to submit later. 
 
 You are free to use this for other projects but please keep in mind that we
 make no stability guarantees whatsoever and might change functionality any
 time.
 
 ## How to use
 
-To update the copyright on all the repos indexed at
-[https://hg.adblockplus.org/](https://hg.adblockplus.org/), you can use the
-accompanying shell script, e.g.:
+To update the copyright on all the repos indexed at [https://hg.adblockplus.org/](https://hg.adblockplus.org/),
+simply run the script, e.g.:
 
-    ./run_update_copyright.sh
+    ./update_copyright.py
 
 To run the script elsewhere, you must specify the URL for a Mercurial index
-site to scrape, e.g.:
+site to scrape, and the location of the base URL to push to, e.g.:
 
-    ./update_copyright.py -u https://hg.example.com/
-
-You may also specify a base URL of a remote repo to push to, if it is
-different than the base URL of the index page, e.g.:
-
-    ./update_copyright.py -u https://hg.example.com/ -p ssh://user@hg.
-    example.com/
+    ./update_copyright.py -u https://hg.example.com/ -p ssh://user@hg.example.com/
 
 ## Testing
 
 Testing can be run via [tox](http://tox.readthedocs.org/).