Require pwasm-utils-cli v0.6.0 in README

[geigerzaehler]

The was code produced with pwasm-utils-cli above version 0.6.0 does not execute properly on the parity client. We require version 0.6.0 in the readme.

Fixes #48

[parity-cla-bot]

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[geigerzaehler]

It looks like @geigerzaehler hasn't signed our Contributor License Agreement, yet.

The purpose of a CLA is to ensure that the guardian of a project's outputs has the necessary ownership or grants of rights over all contributions to allow them to distribute under the chosen licence.
Wikipedia

You can read and sign our full Contributor License Agreement at the following URL: https://cla.parity.io

Once you've signed, please reply to this thread with [clabot:check] to prove it.

Many thanks,

Parity Technologies CLA Bot

[clabot:check]

[parity-cla-bot]

It looks like @geigerzaehler signed our Contributor License Agreement. 👍

Many thanks,

Parity Technologies CLA Bot