Update to mirror site
Merge pull request #1 from johnb30/mirror

Update to mirror site
Version 1.0.1

Changes source URL to mirror site.
Added strip.white flag to read.delim

At suggestion of Pat Brandt
Archived version 1.0.1
post DC hackathon

add MD5 check, graceful download failue, set browser ID
Updated MD5 checking

Now checks all files before importing. Created separate function
IsValidGDELT.
Added GetAllOfGDELT
Added user verification to GetAllOfGDELT
Incremented version to 1.1. Added checks. Tweaked examples.

Checks user trailing slashes. Now uses "~/gdeltdata" for local.folder in
examples. Examples now on smaller data sets so they run faster.