Insteon: Fix Error in Debug Logging When Sent Message not Setby an Object

Fixes #345
Insteon: Track the Status of Momentary Relay in IOLinc

Fixes Issue hollie/misterhouse#355
Add Documentation to Generic_Item POD
Merge pull request #359 from krkeegan/Generic_Item_Pod

Add Documentation to Generic_Item POD
Merge pull request #346 from krkeegan/fix_issue_345

Insteon: Fix Error in Debug Logging When Sent Message not Setby an Object
Merge pull request #356 from krkeegan/fix_issue_355

Insteon: Track the Status of Momentary Relay in IOLinc