Fix Genymotion launch script (Genymotion 2.10 and higher)

[timoa]

When I started to use the appium-tests project, I found that the Genymotion emulators launched, but the install of the app was never triggered.

The script was waiting for "Connected" on the last line of the logs, but it does not happen now with the latest Genymotion versions.

Only "Device booted in X ms" can be track and not open the last line because Genymotion emulators log more things after it has booted.