Merge pull request #6 from hamweather/master

Some minor code cleanup and documentation
bump version and publish
Added uint64 methods

Includes uint64 encoding, decoding and bbox support.
Added tests for uint64 methods

tests for encode and decode.
Added keywords to the package.json file

Was not showing up on npm when you search for "geohash"!
Updating README with basic Uint64 documentation

and some grammar fixes and reduction to basic markdown.
Defaulting values of bitDepth to 52
Whoops, titles a bit big
Clarification on number types

Just to clarify that these are not actually uint64 functions but mimic uint64 found in other geohash libraries. Of course the numbers returned are just normal javascript floating point numbers.
Small grammatical/spelling things
Cleaned up code formatting a bit :)
Updated contributors list :) and version number?
fixed url for contributor
Merge pull request #9 from arjunmehta/patch-1

Added uint64 methods
Merge pull request #10 from arjunmehta/patch-2

Added tests for uint64 methods
Merge pull request #11 from arjunmehta/patch-3

Added keywords to the package.json file
Merge pull request #12 from arjunmehta/patch-4

Updating README with basic Uint64 documentation
fixed some copy-paste errors in test, @arjunmehta
added contributor section in README and package.json

@four43, @zhuzhe1983, @arjunmehta
MIT license