Fix to loadElements

Fixes loadElements to execute the callback and return immediately if the slider doesn't contain anything that needs loading. This stops it showing the loading screen indefinitely.
Merge pull request #220 from postcasio/patch-1

Fix to loadElements
new min file
added responsive option - #153
updated readme
changed .width to .outerWidth calculations to fix box-sizing issues - #140
Merge branch 'master' of github.com:wandoledzep/bxslider-4
round up pagerQty when moveSlides/infiniteLoop
Fixes bx-viewport height issue when using `box-sizing:border-box|padding-box`
Auto slide for single page

For single page(image), the automatic transition will happen based on
the "autoSlideForOnePage" boolean property.
Default value for autoSlideForOnePage is false.
Consider slide margin in getNumberSlideShowing
prevent resize from running if slider is destroyed, avoiding styles to be reinserted
Ignore links without data-slide-index inside slides

This link must scroll to slide:
<a data-slide-index="1" href="">Slide #2</a>

This link must go to URL:
<a href="http://google.com">Google</a>
removed timestamp from images
new zip generate
new zip generate2
changed to MIT license
fixed bug for calculating last child width. It was not taking padding & border into consideration
[FIX] bad getPagerQty() when moveSlides and infiniteLoop options are on (can be a non integer value)
Fixes resize bug where li's new width would not be set.