changed PayloadAlert to allow an alert which doesn't have any bodies
Merge pull request #70 from co3k/allow-non-body-alert

change PayloadAlert to allow an alert which doesn't have any bodies
Merge pull request #71 from jimhorng/pr-error-response

Add enhanced message and its corresponding error-handling, resent mechanism Fix #61.
Merge pull request #76 from jimhorng/master

Add 0.1s sleep to read error response loop to avoid crazy looping
Added category support for iOS 8
Added category to output for __repr__
Merge pull request #77 from ZachOrr/master

Added category support for iOS 8
add socket connection broken detection; refine log
Auto close on read E-R worker; refine log msg
wrap error response handling process as a thread class; remove
unnecessary flags
refine log message
remove unnecessary function
update readme