file upload

This version introduces multiple enhancements:

handling upload files
style changes

Details of additions/deletions below:
--------------------------------------------------------------

Added:      .htaccess
            -- Added --
                rewrite rule for apache server

Added:      skin/css/mobile.css
            -- Added --
                responsive styles

Modified:   skin/templates/dropzone.php
            -- Updated --
                changed path to upload files

Modified:   lib/FileHandler.php
            -- Added --
                uploadAction handle upload file
            -- Updated --
                removeAction refactor changes

Modified:   README.md
            -- Added --
                some documentation description

Modified:   skin/templates/header.php
            -- Added --
                load mobile styles file