use fixed separator &, do not rely on arg_separator.output ini setting
Merge pull request #53 from 0x20h/fix-query-encoding

use fixed separator &, do not rely on arg_separator.output ini setting
Update StreamClient.php

Fixes the lack of user agents in the stream context in which certain service providers require when you request anything from them. Like for example Github.

The user agent can be anything.
Merge pull request #57 from CMCDragonkai/patch-1

Update StreamClient.php
Added support for multiple tokens for different services. Also: moved from nicolasff/phpredis to predis/predis
default SessionStorage in examples, reverted storage interface to cleartoken, no 's'
less potential for pushing credentials + small typo fix
Added Service::OAUTH_VERSION constant to identify OAuth version in use.
Added new services: Amazon and PayPal
Added new service: Dropbox
suggested by @flavioheleno
Merge pull request #61 from flavioheleno/master

New services (Amazon, Paypal and Dropbox) and OAuth version constant
Fix in PayPal service to use proper authorization method
Correct handling of error messages returned by Paypal API
Fix in Amazon service to use proper authorization method and correct handling of error messages returned by API
Added general error message to StreamClient's request, when no error message is set
Added a missing scope to Paypal service
Merge pull request #62 from flavioheleno/master

Minor fixes to Amazon and Paypal services
Merge pull request #60 from hannesvdvreken/master

TokenStorage refactor + Testing + PRedis
Fix comment