Revert "added description to README"

This reverts commit 769bc0f1e660be6b3237c70d7aabaa782c3f5a47.
Merge branch 'master' of https://github.com/qqmoi/mrover_drivers
Revert "Revert "added description to README""

This reverts commit f7bb5c56ad2278776f8b30723ad070e6194c6fdf.