Remove empty unset (#14)

1. The unset does not do anything as it anyways run in a sub-shell. Instead, now defaulting "unset-current-credentials" to true as per AWS recommendation
2. Add colour to a step to make it easier to look at action logs

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Co-authored-by: Moulick Aggarwal <[email protected]>

Remove empty unset (#14)

1. The unset does not do anything as it anyways run in a sub-shell. Instead, now defaulting "unset-current-credentials" to true as per AWS recommendation
2. Add colour to a step to make it easier to look at action logs

---
Co-authored-by: Moulick Aggarwal <[email protected]>

description has to be less than 125 char

Add more readme

Switch examples to use marketplace release

Rename action to comply with Marketplace