Apple: Create text file at current folder from finder window

README.txt

http://apple.stackexchange.com/questions/129699/create-a-new-txt-file-in-finder-keyboard-shortcut

Open Automator, create a Service, set the input to "no input", Drag and Drop the "Execute AppleScript" Workflow Element onto the grey space, save the workflow;
Settings -> Keyboard -> Shortcuts -> Services, Assign a Shortcut
The Shortcut may not work, if it is assigned to an Apple-Intern Shortcut already. So be creative on choosing a new one.
Add this to the script:

try
  tell application "Finder" to set the this_folder ¬
   to (folder of the front window) as alias
on error -- no open folder windows
  set the this_folder to path to desktop folder as alias
end try

set thefilename to text returned of (display dialog ¬
 "Create file named:" default answer "filename.txt")
set thefullpath to POSIX path of this_folder & thefilename
do shell script "touch \"" & thefullpath & "\""