add minified JavaScript & css files

scoreflexSDK.js : non-minified file with SDK only
scoreflexSDK-min.js : minified file with SDK only
scoreflexSDK-full.js : non-minified file with SDK + libs (json2 and crypto)
scoreflexSDK-full-min.js : minified file with SDK + libs (json2 and crypto)

style/styles.css : non-minified file with all styles
style/styles-min.css : minified file with all styles