iTerm.sh

#!/bin/bash

CD_CMD="cd "\\\"$(pwd)\\\"" && clear"
if echo "$SHELL" | grep -E "/fish$" &> /dev/null; then
  CD_CMD="cd "\\\"$(pwd)\\\""; and clear"
fi
VERSION=$(sw_vers -productVersion)
OPEN_IN_TAB=0

while [ "$1" != "" ]; do
	PARAM="$1"
	VALUE="$2"
	case "$PARAM" in
		--open-in-tab)
			OPEN_IN_TAB=1
			;;
	esac
	shift
done

if (( $(expr $VERSION '<' 10.7) )); then
	RUNNING=$(osascript<<END
	tell application "System Events"
	    count(processes whose name is "iTerm")
	end tell
END
)
else
	RUNNING=1
fi

if (( ! $RUNNING )); then
	osascript<<END
	tell application "iTerm"
            tell current window
                tell current session of (create tab with default profile)
                    write text "$CD_CMD"
                end tell
            end tell
	end tell
END
else
	if (( $OPEN_IN_TAB )); then
		osascript &>/dev/null <<EOF
		tell application "iTerm"
                    if (count of windows) = 0 then
                        set theWindow to (create window with default profile)
                        set theSession to current session of theWindow
                    else
                        set theWindow to current window
                        tell current window
                            set theTab to create tab with default profile
                            set theSession to current session of theTab
                        end tell
                    end if
                    tell theSession
                        write text "$CD_CMD"
                    end tell
		end tell
EOF
	else
		osascript &>/dev/null <<EOF
		tell application "iTerm"
                    tell (create window with default profile)
                        tell the current session
                            write text "$CD_CMD"
                        end tell
                    end tell
		end tell
EOF
	fi
fi

Have to replace "iTerm" with "iTerm2" to make it work with latest iTerm2 3.0.5.