Create symbolic link for MAMP "htdocs"-folder to current Terminal window path. Finally open localhost:8888. Shortcut through "setdocs" with alias.

Alias

alias setdocs="~/Dropbox/Scripts/set_htdocs_open_localhost.sh"

set_htdocs_open_localhost.sh

CUR_PATH=${PWD}
MAMP_PATH="/Applications/MAMP/"
MAMP_PATH_HTDOCS="/Applications/MAMP/htdocs"

echo 
echo "Removing Symlink:"
echo ${MAMP_PATH_HTDOCS}

sudo rm ${MAMP_PATH_HTDOCS}

echo 
echo "Creating symlink for:"
echo ${CUR_PATH}

ln -s ${CUR_PATH} ${MAMP_PATH_HTDOCS}

echo 
echo "Opening localhost"
open "http://localhost:8888"
echo