updated README
update README
ar71xx: Add kernel support for the tl-mr10u_v1 and tl-wr710n-v1
ar71xx: Add user-space support for the tl-mr10u_v1 and tl-wr710n-v1
ar71xx: add buildprofile for the tl-mr10u_v1 and tl-wr710n-v1