use new CustomEvent to create events instead of document.createEvent
remove minified files
correction callback returned variable
Differentiate Session initialization & Players login events

Session events are now sent when instantiating the SDK.
Players events are sents whenever the current Player changes (at session intialization in particular)
change documentation of Handlers callback
create an enum for session states
correction missing "var" keyword
add "use strict" for Scoreflex module
enhance documentation for ScoreflexEvents
make SessionState a static property of Scoreflex
rename SessionState keys
rename scoreflexSDK.js to scoreflex.js
reindent file properly
update README.md for scoreflex script name
add material for JSDoc documentation generation

- docstrap template
- some tutorials
Makefile for documentation
correction strict syntax (missing "var" keyword)
update Makefile to create "out" directory if missing
correction typo
add some comments