add a cookied code and start shaping the ipcookies library API
Merge pull request #2 from lochiiconnectivity/master

Updated diagrams and README.md
Outline more explicitly the current (inefficient) blackout recovery mechanism.

The recovery algorithm is locally significant, therefore improvements can be easily
made by more sophisticated implementations.
Merge branch 'master' of https://github.com/ayourtch/ipcookies
First commit of the test shim code
Remove the trailing spaces in the lines
clarify/optimize the recovery mechanism
implement the ingress shim path
Clarify the variables for the shim