added .jshintrc
updated JSHint rules
added jsbeautifier grunt task
Merge branch 'master' of https://github.com/cmaurer/angularjs-nvd3-directives

Conflicts:
	dist/angularjs-nvd3-directives.js
	src/directives/nvd3Directives.js
added .jshintrc
updated JSHint rules to be more in line with https://github.com/rwaldron/idiomatic.js
added jsbeautifier grunt task
Changed xAxis domain and range to be set directly from the chart, not from chart.xAxis