Fix close simulator and add reset simulator

[ehuebner]

I worked with that amazing script and recognized two things:

The close sim function does not work:
Simulator application name is "iOS Simulator", not "iPhone Simulator"
function _close_sim {

I know, I know. It says "iPhone Simulator". For some reason,

that's the only way Applescript can identify it.

osascript -e "tell application "iOS Simulator" to quit"
}

I had to delete the app from the simulator to get the new code version in UIAutomation so i reset all simulators before the "_xcode clean build" call by calling my "_reset_all_sim" function:
function _reset_all_sim {
instruments -s devices
| grep Simulator
| grep -o "[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}"
| while read -r line ; do
echo "Reseting Simulator with UDID: $line"
xcrun simctl erase $line
done
}

Attention: If a simulator is running it will not be cleaned. I recommend to call "_close_sim" before "_reset_all_sim" to ensure all simulators are getting cleared.

[jonathanpenn]

I've you'd like to submit a pull request, I'll merge this in.