fix reset_iphone_simulator and add print version

update version 0.2.2
get gemspec version from VERSION
update ui-auto-monkey to https://github.com/jonathanpenn/ui-auto-monkey/commit/7a3bfeb7df5d19de82019a84c440babd1499b732
change version to 0.2.3

udpate doc indent
fix reset_iphone_simulator by remove absolute path

unlock by default
version 0.2.4
fix replace config
add config example