Add /.idea to .gitignore
Rename euca-create-volume's --zone arg

Fixes TOOLS-348
Warn when bundling an image of size 0

Fixes TOOLS-333
Make console output encoding configurable

By default, euca-get-console-output will attempt to decode console
output as UTF-8.  This is changeable with the --encoding option.

Fixes TOOLS-349
Implement CopyImage

Fixes TOOLS-341
Implement ModifySnapshotAttribute

Fixes TOOLS-179
Implement auto-scaling DeleteTags

Fixes half of TOOLS-351
Implement auto-scaling DescribeTags

Fixes half of TOOLS-351
Appease pylint (round 1)