Pulls instruments_command args into a var
Adds awesome_print as runtime dependency
Use ap for logging run-loop options

Sorted keys will help spot unusual patterns.
Adds xcode details to debugging log
Specs can capture stdout and stderr
Extract options logging to method

`run_with_options` is a HUGE method and the logging
behavior is sufficiently complex to warrent a method.
Remove logging from 'prep' time calculation
Failure log no longer repeats information

Besides logging the exception and possible lldb output
resulting from dylib injection, this debug log section was
logging redundant information.
Merge pull request #25 from calabash/feature/use-awesome-print-for-debug-logging

Use awesome print for debug logging