Merge pull request #299 from tylerferguson/gh-pages-dev

Updated legend  how to to include info on series title property
refactored gallery to load index files
cleaned up gallery js
added the front page crossfilter example to the gallery
improved the format and styling of the example
updated gallery refactor to include minor changes from review
Merge pull request #300 from seanworkcode/feature/gallery-use-example-index

refactored gallery to load index files
updated with changes from gh-pages-dev
Merge pull request #301 from seanworkcode/feature/gallery-appstore

Feature/gallery appstore
updated the insight lib version