[doc] Add basic DigitalOcean docs

Fixes #202.
Merge pull request #203 from mmalecki/digitalocean-docs

[doc] Add basic DigitalOcean docs
Cleaning up the main pkgcloud.js file to make managing providers/services easier
Moving travis notifications to #pkgcloud
Making sure install is at the very top of README
Adding a brief logging example to the README

fixes 206.
Adding a winston logging example

Fixes #206
Added Rackspace DNS and Storage examples that were completely amiss.
Adding some cleanup to DNS and storage examples
[fix sec] Scrub data by default when destroying a DO droplet

Fixes #215.
Adding options for deleting a DO server
Minor type and comment cleanup
Merge pull request #218 from rackspace/do-scrub

Make default DestroyServer for DigitalOcean scrub private data
v0.8.17
[refactor] Remove Bootstrapper
[refactor] Remove `bootstrapOptions` from compute clients

Ref nodejitsu/pkgcloud#222.