* PayWithIyzico client added (#22)

* PayWithIyzico client added

* version update

Merge pull request #20 from akselarzuman/master

Travis and Appveyor removed, previous Cake deleted

Merge pull request #16 from akselarzuman/master

Library update according to iyzico/iyzipay-dotnet#84 and iyzico/iyzipay-dotnet#82

Merge pull request #15 from akselarzuman/master

TransactionReport api endpoint and v2 Auth

Readme update

[skip ci]

Merge pull request #10 from akselarzuman/update-payment-item-bug-fix

UpdatePaymentItem Price bug fix

Merge pull request #9 from akselarzuman/restclient-sync-call-fix

Restclient sync call fix

Merge pull request #8 from Blind-Striker/master

Some fixes and version increase

Merge pull request #4 from Blind-Striker/master

Update payment item feature is added