Added support for parallel execution via pom.xml and testng.xml

Updates pom.xml to support a default testng.xml file with option to pass another file as mvn command line parameter

Updates pom.xml to support multiple Suite(testng.xml) files

Split testng.xml file as per browser firefox and chrome

Added testng.xml with browser parameter for Firefox and Chrome

Added Maven surefire plugin

Updated DriverManager to support passing browser from maven command line and testng.xml

Moved CheckoutPageTest under pom package

Added BrowserType ENUM

Added browser parameter for TestNG

Updated pom file, removed duplicate TestNG dependency and JUnit

Generic Jackson deserialization code

Added Account Navbar Link

Moved to tests package

Updated code while entering data in input fields