added auth option for saucelabs remote connection
updated readme
- added singleton option
- information for SauceLabs support
- removed description how to set the browser binary path (should be a part of FAQ or sth.)
- minor formatting
fixed API tests
added readme for testing
rename option attribute from pwd to key
renamed readme caption
added secure variables in .travis.yml file
remove whitespaces in attribute results
refactored tests
keep saucelab key private hint
removed test readme
removed new selenium-standalone jar