Add --avd-args option to launch avd with additional args
Print all errors while starting emulator
Allow to have more than one emulator started
Wait for emulator is ready after launching it
Merge pull request #2099 from rgonalo/master

Allow to have more than one emulator started
more flexible LAUNCH_TIMEOUT in tests
Fixup for #2085. set isElement to false if getElement() throws.
Merge pull request #2116 from paymand/2085

Fixup for #2085. set isElement to false if getElement() throws.