Fix item.link deletion
Remove ununsed imports
Fix typo in error raising message
Fix typo in README
Add requirements, edit setup.py and README
Remove useless odata var in morss/morss.py
Replace TABS with FOUR SPACES in .py

(you might want to use: git diff -w)
Make most of the code pep8-compliant

Thanks a lot to github.com/SamuelMarks for his nice work
Use xrange where applicable (faster)
Raise ImportError when missing dependency for call