Add description on how to build the source
Add notice on problem of having no server for testing
fix demo.html not run
Merge branch 'master' of github.com:xuanluong/freshsliderjs into xuanluong-master

Conflicts:
	demo.html
Merge branch 'xuanluong-master'
Rename demo.html to index.html to use gh-pages
Rename demo.html to index.html to use gh-pages
Merge branch 'master' of github.com:tuanchauict/freshsliderjs
Update README.md