Update README.md
Implementing /session/:sessionId/element/active
Implementing /session/:sessionId/element/:id/element and /session/:sessionId/element/:id/elements
Update README.md
Implementing /session/:sessionId/element/:id/submit
Implementing /session/:sessionId/element/:id/text
Implementing /session/:sessionId/element/:id/name
Implementing /session/:sessionId/element/:id/clear
Updating Readme.md
Merge pull request #12 from penguinho/master

Implementing more methods