Made a few updates for configuration, testing and remove warnings

 - Moved phpunit tests in dedicated tests sub-directory
 - Added phpunit.xml configuration file
 - Added test bootstrap, init script and config file for setting up environment
 and configuration parameters (consumerKey, consumerSecret)
 - Updated testapp.php to not display warnings if entities or themes were not
 in response payload.
 - Updated unit tests to not echo output during test runs
Renamed Classes, cleaned up code formatting

Renamed Semantria classes with a Semantria_ 'namespace'

Removed tab characters from code base

Renamed filenames for classes to match class name according to PSR-0

Changed some conditional structures to be more inline with PSR.
Removed more spaces and Added Default CallbackHandler

Removed more space characters from common.php

Added CallbackHandler/Default.php to be used as a base callbackhandler.
Updated wording.
renamed to AuthRequest.php, code reformatting for PSR-2
reformatting for PSR-2
replace tabs with spaces, remove some trailing spaces
moved GetStatusHandler class from xmlhandlers.php to XmlHandler/Status.php
added coverage, config.php, .idea
support move of GetStatusHandler to its own XmlHandler/Status class
change to autoloader (per Doug L.)
the the -> the
Merge branch 'develop' of https://github.com/scarpent/semantria-sdk into develop
add config.php and don't ignore it anymore
Add init.php to .gitignore