Add new samples (Esri#382)

Based on and using data from ArcGIS case studies at http://desktop.arcgis.com/en/analytics/case-studies/finding-new-home-1-overview.htm and http://desktop.arcgis.com/en/analytics/case-studies/which-college-district-has-the-fewest-low-income-families-.htm

Author: priyankatuteja