Update tests

These are ready to merge once https://github.com/appium/ruby_lib/pull/149 and https://github.com/appium/ruby_lib/pull/150 are merged.

They *should* work once those are in place, but I'm not 100% that all of them will work at once.  

The Android remove & install test was being problematic on my machine, can you check it out @bootstraponline and see if you have similar problems?