Add null check

Fix Cannot read property '0' of null
Stop when activity fails to show up

Fix targetActivity name in debug message
Log when an object is found
Update gitignore
Fix #371
Make content desc case insensitive and partial
Merge pull request #373 from bootstraponline/fail_on_no_activity

Stop when activity fails to show up
Use adbCmd
Add -U for Android

Fix #375
Merge pull request #376 from bootstraponline/adb_cmd

Use adbCmd
Trying to get appium to run it's build on a mac
stub out getCookies method
fix cb logic error in equalsWebElement
get cookies and add a test
make it harder for previous test to pass and write test for setting cookie
write setCookie function
fixed set cookie test
fix edge case
allow setting of cookie with expiry
delete cookie(s)
handle cookie edge case