'Getting Started' Content for site

[justsml]

Hey @spion @petkaantonov @benjamingr et al. I wanted to see if I can add some more useful docs/content 😇.

I've been meaning to write up this guide "Escape from Callback Mountain" for a little while; and, I finally got an initial version hashed out!

Note: A primary goal was to visually highlight common Promise pitfalls WITH the needed steps to resolve - all with Bluebird.

Do you think it's a possible Tutorial link, or maybe parts could be edited & spliced into the docs.

Do you think it would help more devs if I created some 5-12 sec GIFs showing each sub-step 'in action' for Step 2.

The subjects covered touch on several pages:

• http://bluebirdjs.com/docs/beginners-guide.html
• http://bluebirdjs.com/docs/why-promises.html
  • -> README
• http://bluebirdjs.com/docs/working-with-callbacks.html
  • -> README#examples
• http://bluebirdjs.com/docs/anti-patterns.html
• http://bluebirdjs.com/docs/coming-from-other-libraries.html
  • -> Beating a dead horse?
• "Tutorials" links

I created a few task 'issues' for topic ideas which I plan to write on. Feel free to add any as issues or submit pull requests. ❤️

Thanks in advance!