change to using the jsonlite library for json (for compatibility with emuSX and wrassp) and add some basic tests using test that
qualify JSON calls with namespace to make sure we get the right version and use the rjson library.
Adds a basic test, need more.
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab-r
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab-r
Add caching of downloaded files. Add tests.
Notes on running tests in readme