Update vimrc: add '-u' to <leader>gp mapping

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update README.md: add personal description

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update vimrc: change --pdf to --module xelatex

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Fix vimrc: <leader>lbv mapping

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update zshrc: add some directories to PATH

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>