Update keyrequest.py

Key request operators need to add POST data
Update instance.py

platform object doesn't have buildElements functions
Merge pull request #2 from byegoal/patch-1

Update keyrequest.py
Merge pull request #3 from byegoal/patch-2

Update instance.py
correct unit test cases
Merge pull request #4 from bobbyc/dev

correct unit test cases
Merge pull request #12 from bobbyc/master

Updates