postwrite complete, location daata added

backend/src/index.js

backend/src/models/article.js

backend/src/post.js

frontend/src/App.js

frontend/src/Context.js

frontend/src/components/Article.js

frontend/src/components/GoogleLoginButton.js

frontend/src/components/Header.js

frontend/src/components/SearchMapByKeyword.js

frontend/src/pages/Login.js

frontend/src/pages/Main.js

frontend/src/pages/PostWrite.js

frontend/src/pages/Search.js