Add widgets.php

Prepare for new widgets to be released in 0.2
Add base code for widget
Fix bug with short code array
Completely rewrite widget code for player
Add scoreboard widget
Fixed small typo
Revise CSS so it works better with widgets
Merge pull request #3 from deanpapastrat/release/0.2

0.2 Release Merge into Development Branch
Rename shortcode.php to shortcodes.php
Add transients caching and more comments
Remove accidental space
Harden widgets with permissions
Add framework for more stylesheets
Add PHP framework for TinyMCE plugin
Add JS and logo for TinyMCE plugin
Merge pull request #4 from deanpapastrat/release/0.3

Release/0.3 merge with development branch
Create README.md
Update readme with extra information, features