Update run-async-unit-test

get current class and push it to an array. pass that in the payload to
the commend
rename command to run-async-unit-test
add 'test_async' command to switch statement
add node package temp

for use in unit tests
fix deactivate method

@mavensmate has not method destroy(). change to delete object
Add specs for 'run unit tests for this class'
Merge branch 'run-test-for-this-class'