Refactoring for wrapper API class
Merge branch 'master' into wrapper_api_class
Fixing typo (categoryID to categoryId)
Update README.md

Adding documentation skeleton
Do not allow deleting default category
Combine today/someday task into create_new_task
Adding docstring to get_user_info
Merge branch 'master' into wrapper_api_class
Merge pull request #15 from gvkalra/wrapper_api_class

Refactoring for wrapper API class