Updated readme for new echidna CLI.

Updated readme for new foundry CLI.

Merge pull request #2 from webthethird/patch-1

Update foundry.toml config

Clarifying foundry fuzzing configuration.

Better explanation of the Echidna workaround for issue #1

Use Echidna "dapptest" testMode for same revert() behavior as Foundry.

Workaround for Echidna.

First version.

Initial commit