[setup] Don't display password entry with setup command
Bump version to 0.5.5
Add changelog for 0.5.5
Merge pull request #310 from garuma/dont_show_password

[setup] Don't display password entry with setup command
Merge branch 'master' into united

Conflicts:
	ruby-gem/bin/calabash-android-setup.rb
	ruby-gem/lib/calabash-android/version.rb
Environment: Use Calabash::Logger for logging