#### property: `allowPageScroll`

You can set how page scrolling is handled by the browser when the user is interacting with a touchSwipe object.
There are 4 possible settings for the `allowPageScroll` option. These can be strings, or use the plugin constants in $.fn.swipe.pageScroll

- `auto` or `$.fn.swipe.pageScroll.AUTO`
  scrolling will only occur if a user swipes in a direction for which you have NOT defined a swipe handler. E.g If only swipeLeft is defined, then a RIGHT, UP or DOWN swipe would cause the page to scroll.
- `none` or `$.fn.swipe.pageScroll.NONE`
  scrolling will never occur.
- `horizontal` or `$.fn.swipe.pageScroll.HORIZONTAL`
  horizontal swipes will cause the page to scroll.
- `vertical` or `$.fn.swipe.pageScroll.VERTICAL`
  vertical swipes will cause the page to scroll.

NOTE: if the general `swipe` or `swipeStatus` handlers are specificed, then `allowPageScroll` will be dissabled by default, as they detect swipes in all directions. To use scrolling AND the `swipe` handler, set `allowPageScroll` to the direction you want the user to be able to scroll.

allowPageScroll = "auto" or $.fn.swipe.pageScroll.AUTO
Swipe Left or Right The swipe will trigger but the page will NOT scroll.
Swipe Up or Down The page will scroll as there is no up or down swipe handler.
Swipe me
allowPageScroll = "none" or $.fn.swipe.pageScroll.NONE
Swipe Left The swipe will trigger but the page will NOT scroll.
Swipe right, Up or Down No swipe handler is defined, so nothihng happens and the page will NOT scroll.
Swipe me
allowPageScroll = "horizontal" or $.fn.swipe.pageScroll.HORIZONTAL
Swipe left and right are triggered
Swipe me
allowPageScroll = "vertical" or $.fn.swipe.pageScroll.VERTICAL
With the general `swipe` or `swipeStatus` handlers
These enable all 4 directions, but here we have set `allowPageScroll` to "vertical" so the user can scroll up and down, and swipe left and right with the general `swipe` handler.
Note how the vertical swipe is hit and miss. As soon as the page starts scrolling, the user is no longer swiping across the object.
Swipe me
allowPageScroll = "horizontal" or $.fn.swipe.pageScroll.HORIZONTAL
Horizontal, but WITH the general `swipe` or `swipeStatus` handlers
These enable all 4 directions, but here we have set `allowPageScroll` to "horizontal" so the user can scroll up and down, and swipe left and right with the general `swipe` handler.
Swipe me
Pinch and allowPageScroll = "vertical" or $.fn.swipe.pageScroll.VERTICAL
Vertical, but WITH `pinch` handlers
Pinch me