Minor edits to README and exception message

[kath0la]

No description provided.

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Latest commit: b6a76c5

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[jayeshp19]

Nice! Thanks

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
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[jayeshp19]

@kath0la can you please sign CLA so we can merge this

[davidzhao]

I'll add her to the ignore list.. she works here so we won't need this