improved speed when using package level get and set, added examples that compare performance
added submodule janl/node-jsonpointer for comparison
added speed tests comparing with janl/node-jsonpointer
speed comparison example with janl/node-jsonpointer
removed speed comparisons; now in their own repo
added test verifying we can distinquish between undefined values and null values in the object graph
enabled tests using mocha from the browser
added a couple more tests.
Added an example, reset version.