--- /dev/null
+* Gooswapper - Exchange / Google calendar sync
+
+This is an alpha-quality python script that synchronises between
+Exchange and Google calendars. Currently only one-way synchronisation
+(from Exchange to Google) is supported.
+
+** Dependencies
+
+For the google API, install the python3-googleapi package; for
+Exchange, install [[https://github.com/ecederstrand/exchangelib][Exchangelib]] and make sure it's on your Python path
+(the code by default adds ~/upstreams/exchangelib~ ).
+
+** Usage
+
+#+BEGIN_EXAMPLE
+usage: gooswapper.py [-h] [--auth_host_name AUTH_HOST_NAME]
+ [--noauth_local_webserver]
+ [--auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]]
+ [--logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}]
+ [-g GCALID] [-l]
+ exchuser exchemail
+
+Gooswapper calendar sync
+
+positional arguments:
+ exchuser Exchange user e.g. 'SANGER\mv3'
+ exchemail Exchange calendar email e.g. ISGGroup@sanger.ac.uk
+
+optional arguments:
+ -h, --help show this help message and exit
+ --auth_host_name AUTH_HOST_NAME
+ Hostname when running a local web server.
+ --noauth_local_webserver
+ Do not run a local web server.
+ --auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]
+ Port web server should listen on.
+ --logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}
+ Set the logging level of detail.
+ -g GCALID, --gcalid GCALID
+ google Calendar ID
+ -l, --loop keep running indefinitely
+#+END_EXAMPLE
+
+** Bugs / Limitations
+
+See [[file:NOTES.org][NOTES.org]] in the distribution for things that I know need doing;
+feel free to supply patches...