fixed size detection

Without the explicit charset, PHP detects UTF BOM when there are none (like in the middle of files).
Merge pull request #193 from xrstf/patch-1

fixed size detection
Fixed namespacing of OpenCloud Exceptions
Handle empty key in Filesystem
Added apt-get update before running install to fix outdated packages
Adding an Amazon S3 adapter that uses the AWS SDK for PHP 2
The new SDK detects content-types by default. Closes #189
Allows the setting of a custom Content-Type. Closes #187
Allows a method to retrieve an object URL. Closes #149
Use a private canned ACL by default. Closes #132
Adding the start of a spec for the new adapter
More spec tests for the AwsS3 adapter
Removing unnecessary alias
Merge pull request #204 from mtdowling/s3update

Adding an AwsS3 adapter for the AWS SDK for PHP v2
Merge pull request #203 from konradpodgorski/feature/fixedTravis

Added apt-get update before running install to fix outdated packages
Merge pull request #202 from konradpodgorski/master

Handle empty key in Filesystem
Added AzureBlobStorage adapter
- Decoupled Blob Factory
- PSR fixes
- Removed checksum auto calculation (causes weird problems in some circumstances)
- Added specs
- Some minor PSR fixes
- Now fails on major methods when container does not exists (as in amazonS3 adapter)
- Fixed `microsoft/windowsazure` version in `composer.json`
- Improved `keys()` method (thanks @Baachi)
- Added documentation and sample code on README file
- Improved `exists` performance
- Improved error management for exists method
- changed isDirectory to always return false
Merge pull request #206 from lmammino/azure-blob-storage

Added AzureBlobStorage adapter