added 'options' parameter to .use() and Camera()
implemented .use() configuration - #5
package.json includes new dependency
Added new config options to readme
Changed wording of new section in readme
Merge pull request #8 from tessel/es-config-options

Implement .use() configuration
Change compression range 0-255 to 0-1 as per #6
Reflecting new changes in readme
switching compression range to exposed constant
updating new config example in readme to use 0-1 range
Changing camera-options.js example to use new range