Better stencil support for non-inline elements (ie, display:block).

Because getClientRects only returns a single rectangle for a block element,
it's not useful in columned views like Monocle. Instead we need to find the
DOM Ranges within the element and traverse through them to find all the
relevant rectangles.
fix IE 11 pointer event handling

in IE 11, microsoft stared supporting the pointer spec as well as their current pointer specs. This caused double pointer event binding and should teach me to future proof something like this…

This fix tests explicitly for mspointer and pointer separately vs together.
Merge pull request #235 from danshultz/ie-11-pointer-fix

fix IE 11 pointer event handling
add support for standard touch-action css element

this compliments the recent support in IE 11 for pointer events
Merge pull request #236 from danshultz/ie-11-css-compatability-update

add support for standard touch-action css element
fix Browser.is.Gecko to ensure not IE
Merge pull request #237 from danshultz/ie-11-gecko-browser-fix

fix Browser.is.Gecko to ensure not IE
Stencil wasn't working on pages after first-in-component on Gecko.
Large images can get cut-off in Firefox - so we move to pixel-based max-height.
More fail safety around localStorage, which may be disabled by user.
fix IE 11 clipping of books
Merge pull request #240 from danshultz/dev-ie11-clipping-fix

fix IE 11 clipping of books
Set columnedElement style directly, to ensure accurate page counts.
Prevent column drift by fixing the iframe and column widths to even integers.
Fixed a flaw in recalculateDimensions() where some resize events were dropped.

This has resulted in a small API change -- recalculateDimensions no longer
takes arguments. If you need a callback, you should listen for
'monocle:recalculated' and deafen() when it fires.
Always apply column width, even if rules are unchanged.

This solves a problem where page numbers could be out of whack
after changing the font scale in Formatting.
Updated README with clearer 'download' information