Issue #1937728: Added a note to the README about Navbar being incompatible with Toolbar.
Issue #1937728: Added a note to the README about Navbar being incompatible with Toolbar.

Signed-off-by: J. Renée Beach <29747b05d5d50779249c81d22b9b0ad5c2c44bdb@gmail.com>

rokat/navbar,rokat/navbar