Added support for passing GET params to open and getAbsoluteUrl
Merge pull request #29 from evangelion1204/master

PR: Implementation of params for getAbsoluteUrl
Moving documentation to Official Website
Updating contributing notes to include Coding Standard check
Wrong heading (level 1 instead of level 2) on contributions page
Moving commented-out element caching code to separate branch

Related to #36
Fixing PHPCS violations
Wrong url in "HtmlElementsLive" test suite
Updating SelectOption/Radio element description to indicate correct usage
Changes to RadioGroup element

1. adding "getValue" method to Radio typified element that RadioGroup returns
2. replacing "check" (Mink method) usage with "selectOption"
3. updating tests to reflect code changes
4. adding tests to HtmlElementsLive test suite to assert radio button checking
Merge pull request #41 from aik099/incorrect-mink-method-usage-in-elements-fix

Fix incorrect NodeElement usages in Typified Elements
Updating fixture to catch cases when radio/checkbox are not within same element
Implementation of UrlBuilder