add the ricardian clauses to remove the warning

[phila82r]

The first time we compile the contract in ICE, we're getting a bunch of warnings:

% ./compile.sh
Compiling 
Warning, empty ricardian clause file
Warning, empty ricardian clause file
Warning, action <addpool> does not have a ricardian contract
Warning, action <addidea> does not have a ricardian contract
Warning, action <castvote> does not have a ricardian contract
Warning, action <addpool> does not have a ricardian contract
Warning, action <addidea> does not have a ricardian contract
Warning, action <castvote> does not have a ricardian contract

@maoueh was suggesting that we could add the ricardian clauses to remove the warning.

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