Fixed some typos in the code and docs

Closes #381

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Fix typo in the changelog.
Fixed another two typos

Closes #383

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Added images from ubuntu-os-cloud image project

Closes #385

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update examples to use "region" argument instead of using old, unsupported
approach.
Added us-east-2 and us-east-3 regions to the Joyent compute driver.

Closes #386

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Add Vultr compute driver

Closes #384

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Re-generate supported providers and methods tables.
Fix some docstrings.
Fix some formatting and link issues in the GCE docs.
Update doap file - add info about 0.16.0 release.
--changes-path argument is required.
Remove trailing whitespace from the lines.
Fix title underline.
Add logo to vultr driver docs page.
Add t2 nodes to us-west-1 region in the EC2 driver.

Closes #388

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
CLOUDSTACK: Add option to expunge vm on destroy

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>

This closes #382
LIBCLOUD-634 Cloudstack: get template size in list_images extra attributes

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>

This closes #389
fixed word typo

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
Ad ex_security_group_ids argument to the create_node method in the EC driver in
order to be able to launch nodes with security groups on a VPC.

Closes #373

Signed-off-by: Tomaz Muraus <tomaz@apache.org>