Fixes #69, brush size jumps at a certain pressure
Fixes #70, auto-save when appropriate

* Auto-saves on app exit, player export, new, open
* Updates share to show only latest
* Updates share to show boards link
* Updates player to return key instead of url
Speeds up sketchpane

* Removes unnecessary Image creation
* Prevents resizeView while drawing
* Fixes window close
Fixes #18, opening/saving image folder structure

* Script has an embedded reference to a data directory
* Creating a new file or opening will prompt if not previously
explicitly saved
* Save command will prompt if not previously explicitly saved
* Save as will copy as appropriate
* If data path is not found, will prompt user
* When change to data path is made in the script, app will recognize,
prompt user and update images
* Filename is shown in window title bar
* Save as suggests a filename for script
* Save and open suggest a working directory
* Fix a bug when insert new board attempts to insert past last image in
chunk
Updates app name to be StoryboardFountain

* Matches expected pattern for Application Support directory
Adds MIT License
Merge branch 'master' of https://github.com/setpixel/storyboard-fountain

Conflicts:
	node-webkit-src/js/main.js