unfinished migration from grunt to gulp
unfinished work on karma test porting
updated npm packages, updated gulp file
buttons removed instead of disabled according to step index
added delay option, fixed tests, added role attribute to template popover
updated npm packages
Use Node 0.10 on Travis
IE backdrop fixes

When backdrop was used on IE, a white background would appear at the bottom of the page. I was able to reproduce this issue in IE8, IE10 and IE11.

In IE8 the backdrop background color was black without any opacity.

These fixes were tested in IE8, IE10, IE11 and Chrome, everything seemed to be functioning properly in all four browsers.
Buid
Updates the readme to include the dependencies for the dependencies, if you will.
Resolves issue #274 by adding some documentation about the storage attribute, including a link to the correct spot in the docs. Also fixes some invalid HTML I stumbled upon.
Corrects a few typos and addes a new <section> that explains how to set up multisites. I haven't tested this documentation, but I expect with some minor modifications you'll be able to make it correct if it's not already.
Add Node and Ruby installation instructions for Mac in readme
Sudo is not needed for installing grunt CLI
Don't start tour demo automatically
Redirect demo URL on Github
completed migration to gulp
Merge branch 'develop' into gulp

Conflicts:
	.gitignore
	build/css/bootstrap-tour-standalone.css
	build/css/bootstrap-tour-standalone.min.css
	build/css/bootstrap-tour.css
	build/css/bootstrap-tour.min.css
	build/js/bootstrap-tour-standalone.js
	build/js/bootstrap-tour-standalone.min.js
	build/js/bootstrap-tour.js
	build/js/bootstrap-tour.min.js
	docs/assets/css/bootstrap-tour.css
	docs/assets/js/bootstrap-tour.js
	docs/assets/js/docs.js
	docs/index.html
	package.json
	src/coffee/bootstrap-tour.coffee
	src/less/standalone/bootstrap.less
substituted bootstrap less sources with one in npm package folder
removed grunt traces