Update .gitignore
Update .gitignore

add processing_log to gitignore
Kibrael/hmda-viz-prototype,awolfe76/hmda-viz-prototype,Kibrael/hmda-viz-prototype,cfpb/hmda-viz-prototype,cfpb/hmda-viz-prototype,awolfe76/hmda-viz-prototype,Kibrael/hmda-viz-prototype