Small tweaks from issue #23

The sum of the changes are:

###SRC
* Fixes startImmediately (if users set idle config, and it still startImmediately, it would toggle incorrectly) #23 
* Changed opts references obj in toggleIdleState
* Added reset, pause/resume, getRemainingTime #19 
* Fixed chaining
* Internally document obj keys
* Assumed initial state based on idle parameter
* Fixed iPad bug that fired event if textarea had focus (more notes in source)
* lastActive added to object to support autologout demo (http://thorst.github.io/jquery-idletimer/autologout.html)
* Fixed mousemove issues expirienced in chrome, ive also hit this (while producing the new demo page) on mobile safari/chrome in iOS 7.0.4 & 7.0.6

###DEMO
* Updated jQuery to newest
* Remove jquery UI added bootstrap
* Added examples of all new functions
* Made clearer document/textarea logs
* Stops event propagation on textarea
* Mobile meta viewport
* Shows default state according to idle parameter (or lack thereof)
* Added demo for autologout

###README
* Link to demo
* Document new functions
* Document supported browsers

You can view the updated demo here: http://thorst.github.io/jquery-idletimer/

The only thing that would need changed are the urls in the demo page.