#111 Add info about check credentials before
#111 Add info about check credentials before

- Updated README file with new option `check_credentials_before`

Signed-off-by: Uilian Ries <d4bad57018205bdda203549c36d3feb0bfe416a7@gmail.com>

cstb/conan-package-tools,cstb/conan-package-tools,conan-io/conan-package-tools