Adding coin-slider

Description: jQuery Image Slider with Unique Effects
Source: https://github.com/kopipejst/coin-slider
Author: Ivan Lazarevic
License: MIT
add jquery.pjax v1.9.0
Updating all files to 1.2
Merge pull request #3393 from erikflowers/updating-weathericons

[author] Updating all files to 1.2
Merge pull request #3391 from PeterDaveHello/jquery.pjax_v1.9.0

add jquery.pjax v1.9.0
Merge pull request #3383 from JGallardo/master

Adding coin-slider