Closing project
Login page has a CSRF token again.

- Login was broken, fixed.
- Minor: WS fix.
Upload filename is optional.

Don't set the filename for file-uploads always, only if the optional
parameter has been passed. This feature is not documented with Curl MANUAL
and not all PHP versions support it (PHP >= 5.3.1).

- https://bugs.php.net/48962
Reopening project
Code cleanup (Typos, HTML).
Version bump v1.1.6
Throw Exception with Curl error number, see #5
Example corrections

Change-Id: I88525d84a76f4359593b493dbd0833b546be892e
Signed-off-by: Cesar Augusto Delgado Rodriguez
<cesaraugusto.delgado.rodriguez@atsistemas.com>
Merge pull request #8 from chebetos/master

Invalid HTML fixed in example.php
WS fixes.
Check maximum filesize of 300MB before upload.

- Add Exception message.
- Issue #9
Merge pull request #10 from hakre/development

- Version bumb v1.1.8
- Filesize limit check, see #9
- WS fixes.
Added DropboxUploader::uploadString() method to upload a string as file.
Fix: Close curl handle before throwing Exception
Fix: Remove superfluous method parameter in request()
Fix: Email and Password are strings and must not be empty
Streamline code-formatting and Typography

- Code-formatting and Typography
- Dropbox configuration removed magic numbers, now class constants
- Uppercase constants
- Code arrangement in extractToken()
Version bump v1.1.9
Merge pull request #12 from hakre/development

Maintenance v1.1.9
New: DropboxUploader Error-Codes

- Each Exception thrown now has an integer error-code.
- Each error-code has a DropboxUploader class-constant.
- Each error-code bitwise-and DropboxUploader::FLAG_DROPBOX_GENERIC equals TRUE.
- See Issue #11