Removing SWF on pause and stop

- Using a constant var FLASH_CONTENT_ID to store the id value of the flash content div
- Calling swfobject method removeSWF to remove the embedded SWF object when registered handlers _onPause or _onStop are triggered
Re-creating removed flash content element

- Wrapped flash content div in a container div
- In _embed function prior to embedding the SWF, now checking to see if SWF was previously removed
- If SWF had been previously removed, re-creating the flash content div with its alternative content
Ensuring cache buster on URL value

- Generating random number to append to the URL value
Correcting title of README

- Corrected the title from Web Page Widget to Flash Widget
Merge pull request #6 from Rise-Vision/chore/finalize

Development complete, ready for QA