Require project id as otherwise it will fail with cryptic error
Fixed - allow to attach already existing disks
Added - flag to set whether disk needs to be delete or not when instance terminates
Fix some typos and grammar mistakes in the website's Use Cases section.
Cleanup of the 'Terraform vs. Custom Solutions' section.
Allow building of EC2 instances with ebs_optimized flag
providers/digitalocean: if delete droplet returns 404, mark as gone
providers/digitalocean: add user_data for create droplet

fixes #267
providers/digitalocean: fix tests for region

the user_data argument doesn't exist on all regions
Merge pull request #260 from jkinred/master

providers/amazon: Allow building of EC2 instances with ebs_optimized flag
website: update docs for GH-260]
Merge pull request #257 from jlund/versus-updates

website: Cleanup of the 'Terraform vs. Custom Solutions' section
Merge pull request #256 from jlund/use-cases-updates

website: Fix some typos and grammar mistakes in the website's Use Cases section
Merge pull request #254 from dainis/fix_gce_persistent_disk_attaching

providers/google: Fix gce persistent disk attaching
website: update docs for google
Update CHANGELOG
providers/aws: use GetOk to check for value [GH-258]
command: adhere to -no-color, fix test [GH-250]
command: expand ~ manually in var-file [GH-273]
command: make sure errors from flag go to UI [GH-269]