Fix a typo: s/topoligcally/topologically/
Merge pull request #114 from razvanm/patch-2

Fix a typo: s/topoligcally/topologically/
Return information about created image.
Do not require AWS credentials in manifest file

Boto allows for storing credentials in ~/.boto file; user those
if user has not provider one in manifest file.
Merge pull request #115 from rybaktomasz/return-info

Return information about created image.
Merge pull request #116 from rybaktomasz/aws-credentials

Do not require AWS credentials in manifest file