Add .gradle/ directory back into .gitignore file
Add .gradle/ directory back into .gitignore file

JeffreyRuder/groovy-ping-pong,midoribowen/todo,kcmdouglas/TaskAndCategories,JeffreyRuder/kitchen,JeffreyRuder/dictionary,JeffreyRuder/registrar,Anithasrini/triangles,kcmdouglas/Registrar,NathanRomike/album-organizer,JeffreyRuder/tamagotchi,cehoughton/to_do_list,NathanRomike/to-do_DB2,JeffreyRuder/Restaurant,cehoughton/todo,ikuchko/to_do_db,JeffreyRuder/java-spark-template,JeffreyRuder/rectangles,JeffreyRuder/to_do_hw,JeffreyRuder/salon,ikuchko/doctors_office,csiems/Tamagotchi,csiems/kitchen,JeffreyRuder/parcel,midoribowen/DB_todo,JeffreyRuder/album_collection,JeffreyRuder/triangles,Anithasrini/parcel,csiems/Library_Catalog_Project,JeffreyRuder/address_book,csiems/ToDo,JeffreyRuder/shoe_stores