Merge pull request #253 from ScottLogic/gh-pages-dev

Merge gh-pages-dev into gh-pages for version 1.2.0 release
Created basic getting started page
Added content to getting-started page
Merge remote-tracking branch 'upstream/gh-pages-dev' into feature/getting-started-page
Improved content and fixed spelling errors in getting started page
Updated getting started chart to not use groupings
Updated getting started guide instructions
Renamed duplicate controller: GettingStarted => GettingStartedWithGroupings
Using API link to insight.DataSet
Added JSFiddle link
Updated getting started page

in response to pull request comments
Merge pull request #262 from tylerferguson/feature/getting-started-page

Created and added content to Getting Started page