Added iTerm2 version 3.0-compatible Applescript block

On-MacVim-with-iTerm2.md

@@ -1,3 +1,5 @@
+# For iTerm2 version 2.x
+
 (Originally posted by @gleachkr)
 
 To open fzf from MacVim in a new iTerm2 window, it should work to make the following script executable somewhere in your Vim's PATH (with the title, for example, "In_a_new_term_function") and to let g:fzf_launcher = "In_a_new_term_function %s"
@@ -74,4 +76,34 @@ end run' $1 $PWD
 
 And put it in PATH (I've put it in `/usr/local/bin`)
 
-Note: it doesn't work very well if you've got an instance of iTerm2 running in full screen
+Note: it doesn't work very well if you've got an instance of iTerm2 running in full screen
+
+# For iTerm2 version 3.0 and higher
+
+(Added by @amacdougall)
+
+The Applescript API for iTerm2 has changed with version 3.0. This updated script works for me:
+
+```bash
+# update for iterm2 3.0+
+osascript -e \
+'on run argv
+    tell application "System Events"
+        set old_frontmost to item 1 of (get name of processes whose frontmost is true)
+    end tell
+    tell application "iTerm2"
+        set myterm to (create window with default profile)
+        tell current session of first window
+            -- exec command "bash"
+            write text "cd " & quoted form of (item 2 of argv)
+            write text (item 1 of argv) & " && exit"
+        end tell
+        repeat while (exists myterm)
+            delay 0.1
+        end repeat
+    end tell
+    tell application old_frontmost
+        activate
+    end tell
+end run' "$1" "$PWD"
+```