minor #597 Update Readme (alborq)
minor #597 Update Readme (alborq)

This PR was squashed before being merged into the 2.x-dev branch (closes #597).

Discussion
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Update Readme

Hello @chalasr

Some change into readme.
I have remove some old indication and add some precision.

Commits
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377ab9a Update Readme

chalasr/LexikJWTAuthenticationBundle,lexik/LexikJWTAuthenticationBundle