Update README.md for v3 (#129)

* Update README.md

* Update README.md

README.md

@@ -2,7 +2,7 @@
 
 An [OmniAuth](https://github.com/intridea/omniauth) strategy for authenticating with [Auth0](https://auth0.com). This strategy is based on the [OmniAuth OAuth2](https://github.com/omniauth/omniauth-oauth2) strategy.
 
-> :warning:  **Important security note:** This solution uses a 3rd party library with an unresolved [security issue(s)](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-9284). Please review the details of the vulnerability, including [Auth0](https://github.com/auth0/omniauth-auth0/issues/82 ) and other recommended [mitigations](https://github.com/omniauth/omniauth/wiki/Resolving-CVE-2015-9284), before implementing the solution.
+> :warning:  **Important security note for v2:** This solution uses a 3rd party library that had a [security issue(s)](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-9284) in v2. Please review the details of the vulnerability, including [Auth0](https://github.com/auth0/omniauth-auth0/issues/82 ) and other recommended [mitigations](https://github.com/omniauth/omniauth/wiki/Resolving-CVE-2015-9284), before implementing the solution in v2.  **[Upgrading to v3](https://github.com/auth0/omniauth-auth0/pull/128) of this library resolves the issue.**
 
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 [![codecov](https://codecov.io/gh/auth0/omniauth-auth0/branch/master/graph/badge.svg)](https://codecov.io/gh/auth0/omniauth-auth0)