Added data loading and cleaning Jupyter notebook#205

salice merged 2 commits intomainhackforla/data-science:mainfrom

177-create-311-data-csv-files-that-can-be-accessed-through-a-jupyter-notebookhackforla/data-science:177-create-311-data-csv-files-that-can-be-accessed-through-a-jupyter-notebookCopy head branch name to clipboard