add phpdoc links to documentation
add phpdoc for mock properties
replace native json_decode with guzzle response->json()
replace guzzle/guzzle with guzzle/http in composer.json
updating description and keywords in composer.json
remove code duplicates from invoicing tests
add error codes constants to MobilePayment
add readme
add invoice setters and test
rename Security to Validator\IpChecker
widget improvements
add IpCheckerTest and add more info to exception message
refactor class Project usage
Merge pull request #1 from xsolla/tweaks

Tweaks