New exploration with SNA clustering methods

Adopted {igraph} package to convert data into graph format and conducted
SNA clustering such as walktrap algorithm. See advancedClustering.R

Improved graphing by displaying edges on top of the geo scatter plot.
See advancedGraphing.R
Major improvement over some functions

Used {igraph} and {data.table} to speed up the createDistanceMatrix
function tremedously.

Added new analysis and graphing functions.

Changed fullAnalysis.R accordingly.