Provide libcareplus docs links. Signed-off-by: yezengruan <yezengruan@huawei.com> (cherry picked from commit 4560dc65696f271af5f98e84b688cc7621a2dca1)
This commit add basic description about LibcarePlus in README.md Signed-off-by: Ying Fang <fangying1@huawei.com>