The Evernote Show Hide Keyboard Button is a recreation of the button used by Evernote to show and hide the keyboard.
You can read about the details on calgary's awesome iPhone dev site - yycApps.com
This code is released under the Creative Commons Attribution 2.5 Canada License (except that which is quoted from elsewhere or attributed to others.)
Effectively you're free to reproduce, reuse and modify this code as long as you say you got it from me.
If you benefitted from this code, feel free to do something nice for someone and pay it forward.
If you want to contribute to the project with bug fixes, or the like, that's awesome! Submit a Pull Request and I'll be sure to have a look at the code.